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Explain how an estimate helps you to place the decimal point when multiplying 3.9 times 5.3

User EzeTeja
by
8.3k points

2 Answers

4 votes
Estimations are like rounding

Steps to solve

1. turn 3.9 to 4

2. Turn 5.3 to 5

3. Multiply 4*5

4. you're answer should be 20

5. Now put the decimal to the left of 20

Step-by-step explanation:

Estimating helps you because it makes it easier for you to multiply after you round.

User LukeP
by
8.8k points
4 votes
3.9 * 5.3 ≈ 4 * 5

≈20

Well after doing your multiplication, you can place your decimal point by knowing that from estimation the answer is around 20.

So you can place your decimal point after the first two digits from the left.
User JNK
by
7.6k points

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