Math · Age 9 · Addition & Subtraction
Estimating with Rounding (Ex. 2)
Check if calculated answers are reasonable using estimates.
Module
Addition & Subtraction
Age
Age 9
Duration
8 min
Questions
5
What's in this exercise
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Question 1
Multiple choice
A student says 3,456 + 4,789 = 8,245. Is this reasonable? Estimate first.
Question 2
Multiple choice
Estimate 6,823 − 4,197 to the nearest 1,000.
Question 3
Multiple choice
Which calculation has an estimate of about 9,000?
Question 4
Sequence
Estimate to nearest 1,000: 3,400 → 3,000; 4,600 → 5,000; 5,400 → ___.
Question 5
True or false
An estimate of 5,000 + 3,000 = 8,000 is reasonable for 4,782 + 3,156.