Estimating the Sum of Decimals up to Two Decimal Places
Round decimals and estimate the sum. Compare the estimate to the precise sum in this activity.
Task 1
Putting It All Together
Answer these open ended questions on your own or with others to form deeper math connections.
Task 2
When would you round a number with a decimal to the benchmark values shown on the number line above?
Task 3
Why does rounding to these benchmark values make it easier to add decimals?