1 / 107

1.17k likes | 1.86k Vues

Mental Math. A Life Long Skill. Why Mental Math?. Calculating in you head is a practical life skill. Mental math can make written computation easier or quicker Proficiency in mental math contributes to increased skill in estimation

Télécharger la présentation
## Mental Math

**An Image/Link below is provided (as is) to download presentation**
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.
Content is provided to you AS IS for your information and personal use only.
Download presentation by click this link.
While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

**Mental Math**A Life Long Skill**Why Mental Math?**• Calculating in you head is a practical life skill. • Mental math can make written computation easier or quicker • Proficiency in mental math contributes to increased skill in estimation • Mental calculation can lead to a better understanding of place value, mathematical operations, and basic number sense. • It is new a challenge each day • Bi-weekly draws • OUR BRAIN IS WITH US WHEREVER WE GO, OUR CALCULATOR IS NOT!!**Guidelines for Mental Math**• Mental math is DAILY, but not necessarily a test daily • Each test will be 10 questions • 5 seconds to answer each question • Test is self corrected, you recorded results • name goes in for a draw (1, 2, 3 chances) • If corrected incorrectly no chance to win during the next draw. • If no red pen, no tickets for that day • Unprepared for three classes eliminates you from that weeks draw. • Strategies used will be discussed**Mental Math # 1**• The operation associated with the term addend is ? • The operation associated with the term quotient is ? • The operation associated with the term factor is ? • The operation associated with the term dividend is ? • The operation associated with the term product is ? • The operation associated with the term minuend is ? • The operation associated with the term sum is ? • The operation associated with the term subtrahendis ? • The operation associated with the term is divisor? • The operation associated with the term is difference ?**Mental Math # 1**• The operation associated with the term addend is + • The operation associated with the term quotient is • The operation associated with the term factor is x • The operation associated with the term dividend is • The operation associated with the term product is x • The operation associated with the term minuend is - • The operation associated with the term sum is + • The operation associated with the term subtrahend is - • The operation associated with the term is divisor • The operation associated with the term is difference-**Mental Math # 2**Name the term represented by the number that is blue. • 70 + 43 = 113 • 10 + 70 + 3 = 83 • 200 - 50 = 150 • 50 – 10 = 40 • 500 - 200 = 300 • 4 x 4 = 16 • 4 x 300 = 1200 • 50 10 = 5 • 8 4 = 2 • 40 1 = 40**Mental Math # 2**• 70 + 43 (addend) = 113 • 10 + 70 + 3 = 83 (sum) • 200 (minuend) - 50 = 150 • 50 – 10 = 40 (difference) • 500 - 200 (subtrahend) = 300 • 4 (factor) x 4 = 16 • 4 x 300 = 120 (product) • 50 10 = 5 (quotient) • 8 4 (divisor) = 2 • 40 (dividend) 1 = 40**Mental Math # 3**Name the term represented by the number that is blue. • 70 x 40 = 2800 • 500 + 43 = 543 • 20 5 = 4 • 20 x 50 = 1000 • 700 – 300 = 400 • 50 + 50 = 100 • 30 2 = 15 • 50 -10 = 40 • 8 4 = 2 • 100 - 40 = 60**Mental Math # 3**• 70 x 40 (factor) = 2800 • 500 + 43 = 543 (sum) • 20 (dividend) 5 = 4 • 20(factor) x 50 = 1000 • 700 (minuend) – 300 = 400 • 50 (addend) + 50 = 100 • 30 2(divisor) = 15 • 50 -10 = 40 (difference) • 8 4 = 2 (quotient) • 100 - 40 (subtrahend) = 60**Mental Math # 4**• When you multiply 2 numbers, the result is called the ? • The numbers you add together to get a result are called the ? • How many you take away from the amount you started with is called the ? • The amount you start with when dividing is called the ? • The result of dividing 2 numbers is called the ? • To find a product, the numbers you multiply are called ? • The result of 2 numbers added together is called the ? • The number of equal groups you want to make when dividing is called the ? • The amount you get when subtracting two numbers is called the ? • The amount you start with when subtracting is called the ?**Mental Math # 4**• When you multiply 2 numbers, the result is called the product. • The numbers you add together to get a result are called the addends. • How many you take away from the amount you started with is called the subtrahend. • The amount you start with when dividing is called the dividend. • The result of dividing 2 numbers is called the quotient. • To find a product, the numbers you multiply are called factors. • The result of 2 numbers added together is called the sum. • The number of equal groups you want to make when dividing is called the divisor. • The amount you get when subtracting two numbers is called the difference. • The amount you start with when subtracting is called the minuend.**Mental Math # 5**• The product of 5 and 2 is ? • The sum of 5 and 2 is ? • The factors are 3 and 5; the result is ? • The difference of 10 and 8 is ? • 4 x 100 + 8 x 1 + 5 x 1000 = • 50 000 + 3000 + 20 + 7 = • 500 + 300 + 40 = • 80 + 40 + 20 + 2 = • 4000 + 500 + 3000 + 20 = • The quotient is 5, the divisor is 6 what is the dividend?**Mental Math # 5**• The product of 5 and 2 is ? 10 • The sum of 5 and 2 is ? 7 • The factors are 3 and 5; the result is? 15 • The difference of 10 and 8 is ? 2 • 4 x 100 + 8 x 1 + 5 x 1000 = 5408 • 50 000 + 3000 + 20 + 7 = 53 027 • 500 + 300 + 40 = 840 • 80 + 40 + 20 + 2 = 142 • 4000 + 500 + 3000 + 20 = 7520 • The quotient is 5, the divisor is 6 what is the dividend? 30**Mental Math # 6**• 7000 + 300 + 40 + 3 = • 9000 + 70 + 3 = • 2000 + 50 + 400 + 4 = • 50 + 4000 + 7 + 300 = • 5 x 1000 + 3 x 100 + 9 x 10 + 2 x 1 = • 4 x 100 + 8 x 1 + 5 x 1000 = • 50 000 + 3000 + 20 + 7 = • 500 + 300 + 40 = • 80 + 40 + 20 + 2 = • 4000 + 500 + 3000 + 20 =**Mental Math # 6**• 7000 + 300 + 40 + 3 = 7343 • 9000 + 70 + 3 = 9073 • 2000 + 50 + 400 + 4 = 2454 • 50 + 4000 + 7 + 300 = 4357 • 5 x 1000 + 3 x 100 + 9 x 10 + 2 x 1 = 5392 • 4 x 100 + 8 x 1 + 5 x 1000 = 5408 • 50 000 + 3000 + 20 + 7 = 53 027 • 500 + 300 + 40 = 840 • 80 + 40 + 20 + 2 = 142 • 4000 + 500 + 3000 + 20 = 7520**Mental Math # 7**• 500 + 3000 + 70 + 3 = • 6000 + 700 + 3 • 2000 + 500 + 40 + 4 = • 50 000 + 30 + 7 + 8000 = • 3 x 10 000 + 1 x 1000 + 9 x 100 + 2 x 10 + 3 x 1 = • 4 x 1000 + 2 x 1 + 5 x 100 = • 200 + 300 + 20 + 5 = • 500 + 500 + 400 + 24 = • 40 + 60 + 20 + 70 + 30 = • 4200 + 500 + 60 =**Mental Math # 7**• 500 + 3000 + 70 + 3 = 3573 • 6000 + 700 + 3 = 6703 • 2000 + 500 + 40 + 4 = 2544 • 50 000 + 30 + 7 + 8000 = 58 037 • 3 x 10 000 + 1 x 1000 + 9 x 100 + 2 x 10 + 3 x 1 = 31 923 • 4 x 1000 + 2 x 1 + 5 x 100 = 4502 • 200 + 300 + 20 + 5 = 525 • 500 + 500 + 400 + 24 = 1424 • 40 + 60 + 20 + 70 + 30 = 220 • 4200 + 500 + 60 = 4760**Mental Math # 8**• 90 + 7000 + 500 + 6 = • 60 000 + 400 + 20 + 3 = • 300 + 700 + 80 + 4 = • 50 000 + 30 + 7 + 8000 = • 3 x 1000 + 9 x 100 + 6 x 10 + 2 x 1 = • 4 x 1000 + 2 x 10 000 + 8 x 100 = • 20 + 80 + 30 + 5 + 70 = • 900 + 600 + 400 + 72 + 100 = • 2000 + 8000 + 700 + 30 = • 5100 + 900 + 70 =**Mental Math # 8**• 90 + 7000 + 500 + 6 = 7596 • 60 000 + 400 + 20 + 3 = 60 423 • 300 + 700 + 80 + 4 = 1084 • 50 000 + 30 + 7 + 8000 = 58 037 • 3 x 1000 + 9 x 100 + 6 x 10 + 2 x 1 = 3962 • 4 x 1000 + 2 x 10 000 + 8 x 100 = 24 800 • 20 + 80 + 30 + 5 + 70 = 205 • 900 + 600 + 400 + 72 + 100 = 2072 • 2000 + 8000 + 700 + 30 = 10 730 • 5100 + 900 + 70 = 6070**Mental Math # 9**• 20 + 6000 + 400 + 7 = • 50 000 + 9000 + 200 + 30 = • 400 + 600 + 3 + 40 = • 20 000 + 300 + 9 + 4000 = • 5 x 1000 + 3 x 100 + 7 x 10 + 2 x 1 = • 7 x 1000 + 8 x 10 000 + 6 x 100 = • 50 + 90 + 50 + 5 + 10 = • 300 + 600 + 700 + 42 = • 4000 + 500 + 500 + 33 = • 3700 + 300 + 76 =**Mental Math # 9**• 20 + 6000 + 400 + 7 = 6427 • 50 000 + 9000 + 200 + 30 = 59 230 • 400 + 600 + 3 + 40 = 1043 • 20 000 + 300 + 9 + 4000 = 24 309 • 5 x 1000 + 3 x 100 + 7 x 10 + 2 x 1 = 5372 • 7 x 1000 + 8 x 10 000 + 6 x 100 = 87 600 7) 50 + 90 + 50 + 5 + 10 = 205 8) 300 + 600 + 700 + 42 = 1642 9) 4000 + 500 + 500 + 33 = 5033 10) 3700 + 300 + 76 = 4076**Mental Math # 10**• 8 x 8 = • 5 x 9= • 4 x 6 = • 20 divided by 5 = • 3 x 7 = • 72 divided by 9 = 7) 7 x 8 = 8) 30 divided by 6 = 9) 7 x 7 = 10) 60 divided by 6 =**Mental Math # 10**• 8 x 8 = 64 • 5 x 9= 45 • 4 x 6 = 24 • 20 divided by 5 = 4 • 3 x 7 = 21 • 72 divided by 9 = 8 7) 7 x 8 = 56 8) 30 divided by 6 = 5 9) 7 x 7 = 49 10) 60 divided by 6 = 10**Mental Math # 11**• 4 x 8 = • 3 x 9= • 7 x 5 = • 36 divided by 6 = • 9 x 9 = • 56 divided by 7 = 7) 2 x 8 = 8) 55 divided by 5 = 9) 7 x 6 = 10) 64 divided by 8 =**Mental Math # 11**• 4 x 8 = 32 • 3 x 9= 27 • 7 x 5 = 35 • 36 divided by 6 = 6 • 9 x 9 = 81 • 56 divided by 7 = 8 7) 2 x 8 = 16 8) 55 divided by 5 = 11 9) 7 x 6 = 42 10) 64 divided by 8 = 8**Mental Math # 12**• 4 x 3 = • 6 x 8= • 8 x 5 = • 63 divided by 9 = • 4 x 7 = • 32 divided by 4 = 7) 2 x 12 = 8) 72 divided by 8 = 9) 7 x 7 = 10) 48 divided by 8 =**Mental Math # 12**• 4 x 3 = 12 • 6 x 8= 48 • 8 x 5 = 40 • 63 divided by 9 = 7 • 4 x 7 = 28 • 32 divided by 4 = 8 7) 2 x 12 = 24 8) 72 divided by 8 = 9 9) 7 x 7 = 49 10) 48 divided by 8 = 6**Mental Math # 13**• 8 x 3 = • 9 x 8= • 9 x 6 = • 36 divided by 9 = • 4 x 4 = • 40 divided by 5 = 7) 3 x 12 = 8) 42 divided by 6 = 9) 7 x 4 = 10) 64 divided by 8 =**Mental Math # 13**• 8 x 3 = 24 • 9 x 8= 72 • 9 x 6 = 54 • 36 divided by 9 = 4 • 4 x 4 = 16 • 40 divided by 5 = 8 7) 3 x 12 = 36 8) 42 divided by 6 = 7 9) 7 x 4 = 28 10) 64 divided by 8 = 8**Mental Math # 14**• 200 + 60 000 + 4 + 70 = • 50 + 80 + 90 + 20 + 10 = • 400 + 600 + 3000 + 400 = • 23 + 300 + 7 = • 6 x 1000 + 2 x 100 + 0 x 10 + 2 x 1 = • 9 x 1000 + 8 x 10 000 + 6 x 100 + 4 x 10 = • 9 + 7 = • 90 + 70 = • 139 + 7 = • 390 + 70 =**Mental Math # 14**• 200 + 60 000 + 4 + 70 = 60 274 • 50 + 80 + 90 + 20 + 10 = 250 • 400 + 600 + 3000 + 400 = 4400 • 23 + 300 + 7 = 330 • 6 x 1000 + 2 x 100 + 0 x 10 + 2 x 1 = 6202 • 9 x 1000 + 8 x 10 000 + 6 x 100 + 4 x 10 = 89 640 • 9 + 7 = 16 • 90 + 70 = 160 • 139 + 7 = 146 • 390 + 70 = 460**Mental Math # 15**• 500 + 20 + 500 + 80 = • 30 + 80 + 70 + 10 + 10 = • 200 + 800 + 30 + 400 = • 51 + 3000 + 9 = • 8 x 1000 + 3 x 100 + 4 x 10 + 4 x 1 = • 9 x 10 000 + 8 x 1 + 6 x 1000 = • 7 + 5 = • 70 + 50 = • 127 + 5 = • 330 + 37 =**Mental Math # 15**• 500 + 20 + 500 + 80 = 1100 • 30 + 80 + 70 + 10 + 10 = 200 • 200 + 800 + 30 + 400 = 1430 • 51 + 3000 + 9 = 3060 • 8 x 1000 + 3 x 100 + 4 x 10 + 4 x 1 = 8344 • 9 x 10 000 + 8 x 1 + 6 x 1000 = 96 008 • 7 + 5 = 12 • 70 + 50 = 120 • 127 + 5 = 132 • 330 + 37 = 367**Mental Math # 16**• 48 + 21 = • 53 + 34 = • 34 + 52 = • 456 + 120 = • 438 + 340 = • 629 + 310 = • 400 + 231 = • 456 + 42 = • 381 + 405 = • 705 + 220 =**Mental Math # 16**• 48 + 21 = 69 • 53 + 34 = 87 • 34 + 52 = 86 • 456 + 120 = 576 • 438 + 340 = 778 • 629 + 310 = 939 • 400 + 231 = 631 • 456 + 42 = 498 • 381 + 405 = 786 • 705 + 220 = 925**Mental Math # 17**• 430 + 53 = • 510 + 87 = • 349 + 220 = • 456 + 440 = • 352 + 527 = • 600 + 350 = • 434 + 231 = • 156 + 420 = • 321 + 45 = • 615 + 224 =**Mental Math # 17**• 430 + 53 = 483 • 510 + 87 = 597 • 349 + 220 = 569 • 456 + 440 = 896 • 352 + 527 = 879 • 600 + 350 = 950 • 434 + 231 = 665 • 156 + 420 = 576 • 321 + 45 = 366 • 615 + 224 = 839**Mental Math # 18**• 974 + 23 = • 320 + 29 = • 341 + 208 = • 677 + 320 = • 425 + 563 = • 60 + 322 = • 400 + 231 = • 424 + 424 = • 333 + 425 = • 610 + 220 =**Mental Math # 18**• 974 + 23 = 997 • 320 + 29 = 349 • 341 + 208 = 549 • 677 + 320 = 997 • 425 + 563 = 988 • 60 + 322 = 382 • 400 + 231 = 631 • 424 + 424 = 848 • 333 + 425 = 758 • 610 + 220 = 830**Mental Math # 19**• 543 + 253 = • 841 + 200 = • 128 + 331 = • 415 + 363 = • 52 + 315 = • 400 + 200 + 387 = • 398 + 502 = • 260 + 540 = 9) 390 + 208 = 10) 111 + 111 + 111 =**Mental Math # 19**• 543 + 253 = 796 • 841 + 200 = 1041 • 128 + 331 = 459 • 415 + 363 = 778 • 52 + 315 = 367 • 400 + 200 + 387 = 987 • 398 + 502 = 900 • 260 + 540 = 800 9) 390 + 208 = 598 10) 111 + 111 + 111 = 333**Mental Math # 20**• Five and three tenths = • Thirty two and four hundredths = • Seventy-seven thousandths = • Two hundred four and five hundredths = • Nine hundredths = • 4 + 0.2 = • 30 + 5 + 0.9 + 0.07 = • 200 + 0.8 = 9) (5 x 1) + (2 x 0.1) + (4 x 0.01) = 10) 3 x 100 + 6 x 0.01 =**Mental Math # 20**• Five and three tenths = 5.3 • Thirty two and four hundredths = 32.04 • Seventy-seven thousandths = 0.077 • Two hundred four and five hundredths = 204.05 • Nine hundredths = 0.09 • 4 + 0.2 = 4.2 • 30 + 5 + 0.9 + 0.07 = 35.97 • 200 + 0.8 = 200.8 9) (5 x 1) + (2 x 0.1) + (4 x 0.01) = 5.24 10) 3 x 100 + 6 x 0.01 = 300.06**Mental Math # 21**• Nine and three hundredths = • Thirty two and four tenths = • Seven thousandths = • Three hundred and fifteen thousandths = • Nine hundredths = • 5 + 0.2 + 0.06 = • 300 + 50 + 0.9 + 0.04 = • 20 + 0.08 + 3 = 9) (5 x 0.001) + (2 x 0.01) + (4 x 0.1) = 10) 3 x 100 + 6 x 0.1 + 4 x 1 =**Mental Math # 21**• Nine and three hundredths = 9.03 • Thirty two and four tenths = 32.4 • Seven thousandths = 0.007 • Three hundred and fifteen thousandths = 300.015 • Nine hundredths = 0.09 • 5 + 0.2 + 0.06 = 5.26 • 300 + 50 + 0.9 + 0.04 = 350.94 • 20 + 0.08 + 3 = 23.08 9) (5 x 0.001) + (2 x 0.01) + (4 x 0.1) = 0.425 10) 3 x 100 + 6 x 0.1 + 4 x 1 = 304.6**Mental Math # 22**1) One Whole

More Related