Mental Math And Estimation-Grade 3 Question Preview (ID: 4596)


Chapter 2 Review For Grade 3. TEACHERS: click here for quick copy question ID numbers.

387+96= _________- 4
a) 475
b) 479
c) 483
d) 487

455 - 99= 456 - _______
a) 100
b) 101
c) 199
d) 200

Tony sells 7,359 gallons of gasoline. What is this volume rounded to the nearest hundred?
a) 7000 gallons
b) 7300 gallons
c) 7360 gallons
d) 7400 gallons

Which is a reasonable estimate of the difference between 8,446 and 2,312.
a) 10,000
b) 8,000
c) 6,000
d) 5,000

Add mentally: 62+27
a) 87
b) 89
c) 100
d) 80

subtract mentally: 53-11
a) 40
b) 60
c) 42
d) 41

Use Front End estimation: 632+421
a) 1000
b) 800
c) 1035
d) 1100

Estimate to solve: Paul has 72 cards. He gives away 59 cards. About how many cards does he have left?
a) 30
b) 20
c) 10
d) 0

Use estimation to solve: Rick has $99. He saves another $46. About how much money does he have now?
a) $150
b) $140
c) $50
d) $146

The _____________ in a number is the digit with the greatest place value.
a) hundreds
b) leading digit
c) front end estimation
d) five

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