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Please answer the problem
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5 votes
Please answer the problem

Please answer the problem-example-1
User Lxalln
by
4.2k points

2 Answers

3 votes

Answer:

Mental math works better.

Explanation:

Mental math.

Counting on the number line is more open to error.

User Pasquale Anatriello
by
4.9k points
4 votes

Answer:

The second works better because:

577-479= 577-(477+2)= 577-477-2=100-2=98

Explanation:

User Tarra
by
4.5k points
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