Multiplying and-dividing-by-10-100-and-1000
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The document explains how to multiply and divide numbers by powers of ten through moving the digits in a number left or right. Multiplying by 10, 100 or 1000 moves the digits left by 1, 2 or 3 spaces respectively. Dividing by 10, 100 or 1000 moves the digits right by 1, 2 or 3 spaces respectively. It provides examples of multiplying and dividing various numbers by 10, 100 and 1000.
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Multiplying and-dividing-by-10-100-and-1000
- 1. 10 000 1000 100 10 1 1 10 1 100 1 1000 Multiplying X 10 digits move LEFT 1 space X 100 digits move LEFT 2 spaces X 1000 digits move LEFT 3 spaces Dividing 歎 10 digits move RIGHT 1 space 歎 100 digits move RIGHT 2 spaces 歎 1000 digits move RIGHT 3 spaces Multiplying and Dividing by 10, 100 and 1000 息 2012 www.greatmathsteachingideas.com
- 2. 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 息 2012 www.greatmathsteachingideas.comCut these out and then use them to do calculations on the 鍖rst sheet of paper
- 3. Multiplying and Dividing by 10, 100 and 1000 息 2012 www.greatmathsteachingideas.com a) 7 X 10 = b) 13 X 10 = c) 5.43 X 10 = d) 34.1 X 100 = e) 32 X 100 = f) 1.234 X 100 = g) 3.2 X 1000 = h) 0.32 X 1000 = i) 0.001 X 1000 = j) 43 歎 10 = k) 432 歎 10 = l) 0.2 歎 10 = m) 432 歎 100 = n) 121.3 歎 100 = o) 0.2 歎 100 = p) 3234 歎 1000 = q) 433 歎 1000 = r) 7 歎 1000 = s) 0.003 X 10 = t) 32.003 X 100 = u) 399.9 歎 10 = v) 3.333 X 1000 = w) 87230 歎 1000 = x) 0.203 X 100 = y) 0.001 X 10 000 = z) 132.345 歎 1000 = Finished? Make up some of your own then solve them Use your number cards and template worksheet to help you answer these questions:
- 4. Multiplying and Dividing by 10, 100 and 1000 息 2012 www.greatmathsteachingideas.com a) 7 X 10 = 70 b) 13 X 10 = 130 c) 5.43 X 10 = 54.3 d) 34.1 X 100 = 3410 e) 32 X 100 = 3200 f) 1.234 X 100 = 123.4 g) 3.2 X 1000 = 3200 h) 0.32 X 1000 = 320 i) 0.001 X 1000 = 1 j) 43 歎 10 = 4.3 k) 432 歎 10 = 43.2 l) 0.2 歎 10 = 0.02 m) 432 歎 100 = 4.32 n) 121.3 歎 100 = 1.213 o) 0.2 歎 100 = 0.002 p) 3234 歎 1000 = 3.234 q) 433 歎 1000 = 0.433 r) 7 歎 1000 = 0.007 s) 0.003 X 10 = 0.03 t) 32.003 X 100 = 3200.3 u) 399.9 歎 10 = 39.99 v) 3.333 X 1000 = 3333 w) 87230 歎 1000 = 87.23 x) 0.203 X 100 = 20.3 y) 0.001 X 10 000 = 10 z) 132.345 歎 1000 = 0.132345 Finished? Make up some of your own then solve them ANSWERS