387+96= _________- 4

455 - 99= 456 - _______

Tony sells 7,359 gallons of gasoline. What is this volume rounded to the nearest hundred?

Which is a reasonable estimate of the difference between 8,446 and 2,312.

Add mentally: 62+27

subtract mentally: 53-11

Use Front End estimation: 632+421

Estimate to solve: Paul has 72 cards. He gives away 59 cards. About how many cards does he have left?

Use estimation to solve: Rick has $99. He saves another $46. About how much money does he have now?

The _____________ in a number is the digit with the greatest place value.

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