IXL | Estimate sums, differences, products, and quotients: word problems

A banana farm received a total of 79 millimeters of rain in March and April. If 31 millimeters of rain fell on the farm in March, about how many millimeters of rain fell on the farm in April? Choose the better estimate.

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question

The music school in Shelby County held a children's concert and an adult's concert at the same time. A total of 77 students performed at the two concerts. If 22 students performed at the children's concert, about how many students performed at the adult's concert? Choose the better estimate.

100

solution

Subtract the number of students who performed at the children's concert from the total number of students.

77 − 22 = ?

Round each number to the nearest ten.

77	–	22	= ?

80	–	20	= 60

60 is the better estimate.

Looking for more? Try these:

Lesson: Estimating products

Lesson: Estimating quotients

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Teacher tools

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Not feeling ready yet? These can help:

D.2Estimate sums: word problems

E.2Estimate differences: word problems

I.5Estimate products: word problems

K.4Divide by 1-digit numbers: pick the better estimate

Lesson: Estimating products

Lesson: Estimating quotients

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