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How to solve in my head without using paper for uil number sense How about an addition problem for example 33 + 23.
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I'd add 3 + 2 and add a zero.
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5s = 15 s = 3
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solve 5s + 40 55 using number sense
1. 3 2.15 3. 19 4.95
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These are 100% the correct answers. D A A C. Enjoy your 100% !!!
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