Download
slide1 n.
Skip this Video
Loading SlideShow in 5 Seconds..
4+8= 6+2= 8+4= 2+6= PowerPoint Presentation
Download Presentation
4+8= 6+2= 8+4= 2+6=

4+8= 6+2= 8+4= 2+6=

112 Views Download Presentation
Download Presentation

4+8= 6+2= 8+4= 2+6=

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. Recalls Addition & Subtraction facts 1616 6 6 99 1111 1010 1010 1+2= 9+6= 2+1= 6+9= 1717 1010 1414 4 18 8 8 88 8+6= 3+5= 6+8= 5+3= 9+9= 8+6= 10+10= 7+7= 2+4= 7+4= 4+2= 4+7= 4+8= 6+2= 8+4= 2+6= 7+9= 8+1= 9+7= 1+8= 8+8= 9+3= 5+5= 3+9= 14 14 1820 8+9= 9+1= 9+8= 1+9= 5+5= 3+6= 6+6= 6+3= 4 20 1010 1515 11 11 12 12 77 1212 5 2 1111 99 138 1010 88 1012 5 6 99 99 138 33 12 14 7 13 1515 1610 2+3= 3+2= 1+1= 3+3= 5+7= 7+5= 5+9= 9+5= 7 13 12 14 4 5 4+3= 3+4= 6+7= 7+6= 3+8= 8+3= 7+3= 3+7= 8+5= 5+8= 5+3= 3+5= 6+1= 1+6= 6+5= 5+6= 3+1= 1+3= 1+4= 4+1= 7 11 1110 6 13 4 5 7 11 1110 6 13 2+2= 4+4= 10+10=9+9= 9+1= 2+9= 1+9= 9+2= 1+5= 5+1= 4+9= 9+4= 8+2= 6+1= 2+8= 1+6= 9+2= 6+4= 2+9= 4+6= 5+4= 7+1= 4+5= 1+7= 7+2= 6+9= 2+7= 9+6=

  2. SUBTRACTION FACTS 2 5 4 2 8-5= 12-6= 8-3= 10-5= 15-8= 15-7= 12-3= 10-2= 12-9= 10-8= 12-7= 14-9= 12-5= 14-5= 17-9= 14-8= 17-8= 14-6= 6-4= 7-2= 6-2= 7-5= 2-2= 15-9= 15-6= 4-4= 16-9= 9-1= 16-7= 9-8= 11-4= 12-8= 11-7= 12-4= 2-1= 5-2= 5-3= 4-0= 13-5= 9-6= 13-8= 9-3= 4-2= 4-3= 4-1= 5-5= 9 8 3 2 5 7 8 3 6 5 12-8= 3-2= 12-4= 3-1= 5 5 7 9 7 4 4 8 4 1 8 2 8 6 9 8 8-2= 1-0= 8-6= 0-0= 0 6 9 0 7 8 9 1 1 2 2 0 2 1 3 0 6 1 2 0 8 3 5 6

  3. 1. 3 3 + 4 4 2. 2 5 + 2 2 3. 6 6 + 2 2 4.1 6 + 1 0 5.1 7 + 2 0 8.2 3 + 3 6 9.6 2 + 1 7 10.3 9 + 6 0 6.1 1 + 2 2 7.3 3 + 4 4 2 DIGIT ADDITION 7 7 4 7 3 7 2 6 8 8 7 9 5 9 7 7 9 9 3 3 • VERTICAL

  4. Adds and subtracts 2-digit whole numbers without regrouping vertically. 7 1 3 3 + 4 4= 1 1 + 2 2= 6 6 + 2 2= 2 8 3 3 + 4 4= 2 7 + 2 0= 3 3 9 + 6 0= 9 1 7 + 1 0= 1 5 + 2 2= 4 10 6 2 + 1 7= 5 • HORIZONTAL 5 3 + 3 6= 6 77 33 88 77 47 99 27 37 79 89

  5. DIGIT SUBTRACTION-VERTICAL 6 6 -2 2 5 4 - 2 3 9 6 -7 5 2 5 -1 4 7 7 - 6 7 5 3 - 4 2 3 6 -2 3 4 4 3 1 2 1 1 1 1 1 1 0 1 1 3 • VERTICAL

  6. 2 DIGIT SUBTRACTION 21 96 -75 24 66 -22 31 54 - 23 11 • HORIZONTAL 25 - 14 10 77 - 67 11 5 3 - 4 2 13 3 6 - 2 3

  7. 1. 7 3=10 13. 8 7=15 5. 17 8=9 9. 4 7=11 2. 9 4=5 14. 15 6=9 6. 9 0=9 10. 9 3=6 3. 12 7=5 11. 16 4=20 7. 13 8=5 15. 17 8=9 8. 9 9=18 4. 6 4=10 12. 9 7=2 16. 19 7=12 Uses appropriate mathematical symbols + + + - - - + - - - - + - + + -

  8. 0+5= 0+1= 0+7= 0+10= 4 1 1 2 0+6= 0+2= 0+3= 6+0= 2 5 4 3 7+0= 5+0= 0+8= 8+0= 6 3 5 6 ZERO PROPERTY:IN ADDITION If you add “0” to any number your sum is:”that number”.I.E. n+0=n 7 1 5 10 6 3 6 2 8 5 8 7

  9. 1-0= 11-0= 19-0= 9-0= 4 4 1 1 20-0= 2-0= 13-0= 3-0= 2 2 5 5 7-0= 8-0= 17-0= 18-0= 6 6 3 3 PROPERTY IN SUBTRACTION If you take away “0” from any number your difference is: ”any number”.I.E. n-0=n 11 19 9 1 13 20 2 3 17 18 8 7