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Estimate Sums and Differences of Whole Numbers and Decimals

In this topic, we learn to estimate sums and differences of whole numbers and decimals. We also learn to round whole numbers, decimals, and money.
Practice Question
1

Two students estimated 22,897 + 5,987. One student's estimate was 29,000. The other student's estimate was 26,000. Who is correct?

 
Possible Answers
Your Answer
Correct Answer
A)

Student 1
B)

Student 2
C)

None of them
Practice Question
2

The African bush elephant weighs between 4.4 and 7.7 tons. What is its least and greatest weight, rounded to the nearest ton?

 
Possible Answers
Your Answer
Correct Answer
A)

4 tons, 7 tons
B)

5 tons, 7 tons
C)

5 tons, 8 tons
D)

4 tons, 8 tons
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