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Published byBathsheba Douglas Modified over 8 years ago

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1 Addition & Subtraction Stage 4 Years 7 & 8 Press Ctrl-A ©2009 G Dear – Not to be sold/Free to use

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2 aligned 1. Write decimals under each other with decimal points aligned. zeros 2. Write zeros in empty decimal places. Addsubtractlike 3. Add or subtract like whole numbers. End of Slide

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3 0 E.g. 3.401 + 5.33 + 2.7 3.4015.33 +2.7 0 0 1 34 1.11 End of Slide

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4 g) 5.58 + 0.733=6.313 h) 6.5 + 0.999=7.499 i) 8.377 + 0.34=8.717 j) 2.121 + 1.09=3.211 k) 12.7 + 11.45=24.15 l) 100.5 + 0.65=101.15 a) 4.3 + 2.5=6.8 b)7.11 + 0.4=7.15 c) 3.321 + 1.41=4.731 d)0.62 + 0.125=0.645 e)5.7 + 3.131 =9.831 f)7.51 + 2.022=9.532 Answer Answer Answer Answer Answer Answer Answer Answer Answer Answer Answer Answer To see the answer click on any coloured disk. End of Slide

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5 1 E.g. 3.401 - 2.7 3.401 - 2.7 0 0 0 1 2 7.0 End of Slide

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6 g) 5.58 - 0.733=4.847 h) 6.5 - 0.999=9.501 i) 8.377 - 0.34=8.037 j) 2.121 - 1.09=1.031 k) 12.7 - 11.45=1.25 l) 100.5 - 0.65=99.85 a) 4.3 - 2.5=1.8 b)7.11 - 0.4=6.71 c) 3.321 - 1.41=1.911 d)0.62 - 0.125=0.495 e)5.7 - 3.131 =2.569 f)7.51 - 2.022=5.488 Answer Answer Answer Answer Answer Answer Answer Answer Answer Answer Answer Answer To see the answer click on any coloured disk. End of Show

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