Question

Which of the following is the best estimate of 5 and three-eighths minus 1 and nine-tenths?

4 and one-half

2 and one-half

3 and one-half

4

Answer 1

5 3/8 - 1 9/10 first convert mix numbers into fraction, so you have

43 19
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8 10

Answer 2

so I subtract

Answer 3

now they are asking for estimate, so 5 3/8 = 5.5 estimated and 1 9/10 estimates = 2