division estimation
Rounding
Estimation: Addition
Estimation: Subtraction
Estimation: Multiplication
100

42 / 8 =

40/8=5
100
Round 56 to the nearest 10
60
100
Using front-end estimation to the nearest 10: 46 + 72 =
50 + 70 = 120
100
Using front-end estimation to the nearest ten: 65 - 27
70 - 30 = 40
100
Using front-end estimation to the nearest 10: 32 x 9
30 x 10 = 300
200

The solution to a division problem.

Quotient

200
Round 349 to the nearest ten.
350
200
Using front-end estimation to the nearest hundred: 324 + 649 =
300 + 600 = 900
200
Using front-end estimation to the nearest ten: 148 - 59 =
150 - 60 = 90
200
Using front-end estimation to the nearest ten: 45 x 9
50 x 10 = 500
300

123 / 10 = 

120 / 10 = 12

300
Round 2,264 to the nearest hundred.
2,300
300
Using front-end estimation to the nearest hundred: 11,068 + 3,876 =
11,100 + 3,900 = 15,000
300
Using front-end estimation to the nearest hundred: 629 - 563
600 - 600 = 0
300
Using front-end estimation to the nearest hundred: 325 x 94
300 x 100 = 30,000
400

59 / 7 = 

56 / 7 = 8

400
Round 3,499 to the nearest thousand.
3,000
400
Using front-end estimation to the nearest hundred: 423 + 513 + 892 =
400 + 500 + 900 = 1,800
400
Using front-end estimation to the nearest hundred: 4,477 - 2,546
4,500 - 2,500
400
Using front-end estimation to the nearest hundred: 567 x 329
600 x 300 = 180,000
500

44 / 6 = 

42  / 6 = 7

500
Wycliffe has 5,555 marbles in his collection. When asked how many he has to the nearest hundred, he should say:__________
5,600
500
Using front-end estimation to the nearest thousand: 724 + 1,425 + 3,512
1,000 + 1,000 + 4,000 = 6,000
500
Using front-end estimation to the nearest thousand: 51,875 - 22,129
52,000 - 22,000 = 30,000
500
Using front-end estimation to the nearest hundred: 2,455 x 196
2,500 x 200 = 500,000
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