2 Answers

Ed Ballot · Answer 1 · 2016-03-01T05:17:40+0000

I think personally it is way easier for me to do it that way. Let's say we have 6.687-4.798, then think how long it takes to solve this problem versus just solving 6.700-4.800. Does that make sense?

Stepan Grigoryan · Answer 2 · 2016-03-03T20:10:03+0000

Estimation is a important skill to know when adding and subtracting decimals because if you estimate you have an idea on what your answer should be close to.

For example 4.68-2.38 could be 5-2 which is 3. 4.68-2.38 equals 2.3. 2.3 is close to 3.

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