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Mastering Multiplication and Division by 10, 100, or 1000 - A KS2 Maths Guide

Join Luca Oliver-Favas in a detailed presentation designed for KS2 Year 6 students on how to effectively multiply and divide numbers by 10, 100, and 1000. Learn the importance of understanding place values and how the position of each digit impacts calculations. This guide includes clear examples and step-by-step explanations suitable for elementary students. Test your understanding with practical exercises at the end. Get ready to boost your maths skills in a fun and engaging way!

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Mastering Multiplication and Division by 10, 100, or 1000 - A KS2 Maths Guide

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Presentation Transcript

  1. Hello Everybody • I’m Luca and I am going to show you how to multiply and divide by 10, 100 or 1000. • I hope you enjoy my presentation and learn from it too.

  2. KS2 MATHS Year 6

  3. HOW TO MULTIPLY AND DIVIDE BY 10, 100 OR 1000 by Luca Oliver-Favas

  4. To help Multiply and Divide by 10, 100 or 1000 you need to understand PLACEVALUES • We know Numbers are made up of Digits: • The Value of a Digit is based on the number 10 • Each Digit has a PLACE • Each Place has a VALUE • Digits after a decimal point means Value is smaller than 1 (example 0.2) • [ The next slide will show the Value each Digit represents →

  5. PLACE VALUES chart ←Example 91,762.584 Each digit has a different value: 90 thousand 1 thousand 7 hundred 6 tens and2 units 5 tenths 8 hundredths 4 thousandths Ninety-one thousand, seven hundred and sixty-two point five eight four

  6. HOW DO YOU MULTIPLY BY 10, 100 OR 1000? • For example: 379.68 x 10 = 3796.8 • This is how you do it: • YOU ARE MULTIPLYING THE NUMBER BY 10 • As there is 1 zero in the number 10, you move ALL the digits to the LEFT by 1 Place • THE NUMBER BECOME 10 X BIGGER • THE DECIMAL POINT NEVER MOVES

  7. REMEMBERWHEN MULTIPLYING DECIMAL NUMBERS: x 10 – MOVE ALL DIGITS 1 SPACE LEFT x 100 – MOVE ALL DIGITS 2 SPACES LEFT x 1000 – MOVE ALL DIGITS 3 SPACES LEFT

  8. HOW DO YOU DIVIDE BY 10, 100 OR 1000? • For example: 379.68 ÷ 10 = 37.968 • This is how you do it: • You are Dividing the number by 10 • As there is 1 zero in THE NUMBER 10, YOU move ALL the digits to the RIGHT by 1 Place • THE NUMBER BECOME 10 X SMALLER • THE DECIMAL POINT NEVER MOVES

  9. REMEMBERWHEN DIVIDING DECIMAL NUMBERS: ÷ 10 – MOVE ALLDIGITS 1 SPACERIGHT ÷ 100 – MOVE ALL DIGITS 2 SPACESRIGHT ÷ 1000 – MOVE ALL DIGITS 3 SPACESRIGHT

  10. TEST YOUR BRAIN • 51.169 x 1000 = • 796.196 x 10 = • 4687.65 ÷ 100 = • 965 x 100 = • 3234 ÷ 1000 = • 91.6754 x 100 = • 6789.123 ÷ 10 = • Write the following number in words: 24,685.46

  11. ANSWERS • 51.169 x 1000 = 51,169.00 • 796.196 x 10 = 7961.96 • 4687.65 ÷ 100 = 46.8765 • 965 x 100 = 96,500 • 3234 ÷ 1000 = 3.234 • 91.6754 x 100 = 9167.54 • 6789.123 ÷ 10 = 678.9123 • Write the following number in words: 24,685.46 Twenty four thousand, six hundred and eighty-five point four six

  12. WELL DONE!Now you all know how to multiply and divide by 10, 100 and 1000.

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