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Key idea: To be able to multiply a number by 10, 100 and 1000

Hi, I’m Wilf, pleased to meet you!. Key idea: To be able to multiply a number by 10, 100 and 1000. W hat. I ’m. L ooking. F or. WILF:. Children who can multiply by 10, 100 and 1000, then say or write the new number they have made. x10. x10. x10.

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Key idea: To be able to multiply a number by 10, 100 and 1000

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  1. Hi, I’m Wilf, pleased to meet you! Key idea: To be able to multiply a number by 10, 100 and 1000 What I’m Looking For WILF: Children who can multiply by 10, 100 and 1000, then say or write the new number they have made.

  2. x10 x10 x10 In the decimal system, the number in each column is 10 times bigger than the number to its right.

  3. 0 We must put a 0 in the empty units column to hold the place so 6 x 10 = 60 If we multiply any digit by ten it will move into the next column x10

  4. x10 x10 2 0 3 Then we must remember to put the zero in to the hold the digits in place! Let’s look at another number 23 x 10 = 230

  5. Let’s try these together! 48 x 10 = 93 x 10 = 134 x 10 = 256 x 10 = 889 x 10 = 480 930 1,340 2,560 8,890 Write the answers on your whiteboards

  6. X 100 0 0 We must put a 0 in the empty columns to hold the place – 6 x 100 = 600 If we multiply 6 by a hundred it will move up two columns

  7. Let’s try these together! 800 8 x 100 = 15 x 100 = 28 x 100= 134 x 100 = 267 x 100 = 1,500 2,800 13,400 26,700 Write the answers on your whiteboards.

  8. 0 0 0 We must put a 0 in the empty columns to hold the place – 6 x 1000 = 6000 If we multiply 6 by a thousand it will move up three columns x1000

  9. Let’s try these examples! 9,000 9 x 1000 = 13 x 1000 = 64 x 1000= 149 x 1000 = 352 x 1000 = 13,000 64,000 149,000 352,000 Write the answers on your whiteboards.

  10. Now you are going to try some yourselves! You’re going to do some brain training with your partner. Remember WILF: Children who can multiply by 10 then say or write the new number they have made.

  11. Time for some more brain training, but this time we’re multiplying by 100! Remember WILF: Children who can multiply by 100 and then say or write the new number they have made.

  12. Now try multiplying by 1000 with your partner Remember WILF: Children who can multiply by 1000 then say or write the new number they have made.

  13. Now try to see if you can improve your score. Can you try the last column on the sheet? Remember WILF: Children who can multiply by 10, 100 and 1000 then say or write the new number they have made.

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