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Published byBranden Cunningham Modified over 9 years ago
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LO: To use long or short division (Grade C)
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Long Division Eg 442 ÷ 26 4 4 2 26 1x26=26 2x26=52 4x26=104 10x26=260 5x26=130 3x26=78 6x26=156 7x26=182 8x26=208 9x26=234 4 1 18 7 44 – 26 =18 =17
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Eg 888 ÷ 24 8 8 8 24 1x24=24 2x24=48 4x24=96 10x24=240 5x24=120 3x24=72 6x24=144 7x24=168 8x24=192 9x24=216 8 3 16 7 88 – 72 =16 =37
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CHUNKING
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Example 1 What is 252 ÷ 6? What is 252 ÷ 6? DividendDivisor
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Using repeated subtraction – taking out CHUNKS 252 ÷ 6 = ? 2526 6 × 25- 150 102 6 × 10 - 60 42 6 × 5- 30 12 Answer: 42 6 x 100 = 6 x 50 = 6 x 25 = 6 x 10 = 6 x 5 = 6 x 2 = 6 x 1 = 6 × 2- 12 0
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Example 2 What is 729 ÷ 9? What is 729 ÷ 9? DividendDivisor
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Using repeated subtraction – taking out CHUNKS 729 ÷ 9 = ? 7296 9 × 50- 450 279 9 × 25 - 225 54 9 × 5- 45 9 Answer: 81 9 x 100 = 9 x 50 = 9 x 25 = 9 x 10 = 9 x 5 = 9 x 2 = 9 x 1 = 9 × 1- 9 0
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Try these Grade D 1.396 ÷ 3 2.819 ÷ 9 Grade C 1.252 ÷ 3 2.651 ÷ 7 Grade B 1.2.52 ÷ 3 2.6.51 ÷ 7
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