Posted by julia on Monday, November 19, 2012 at 8:14pm.
how do you do the counting up method

counting up method  mathtaculator, Monday, November 19, 2012 at 8:53pm
this is used many times for subtraction.
lets take the example 198  46. 198 rounds up to 200, and 46 rounds up to 50. 200  50 = 150. However, that's not our answer. 198 = 2002. so the answer would be 2 added to 150. Also, 46 is 504. So the answer would be another +4 to 150. Thus 1502+4 = 152.
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