Estimating the Difference of Decimals up to Two Decimal Places

Round decimals and estimate the difference. Compare the estimate to the precise difference in this activity.

Tarea 1

Putting It All Together

Answer these open ended questions on your own or with others to form deeper math connections.

Tarea 2

When would you round a number with a decimal to the benchmark values shown on the number line above?

Tarea 3

Why does rounding to these benchmark values make it easier to subtract decimals?