Mental Math
Estimation
Base 10 Models
Long Division
True Or False?
100

16.60 / 4

4.15

100

6.93 / 3 = 231

2.31

100

4.5 / 3 

1.51

100

4.11 / 3

1.37

100

27.09 / 9 = 3.1

False

3.01

200

16.5 / 2

8.25

200

99.27 / 9 = 1103

11.03

200

3.72 / 3

1.24

200

871.2 / 2

435.6

200

13.8 / 6 = 4.6

True

300

48.66 / 6

8.11

300

541.75 / 5 = 10835

108.35

300

0.21 / 7

0.03

300

190.8 / 8

23.85

300

25.6 / 4 = 5.6

False

6.4

400

91.8 / 9

10.2

400

847.56 / 7 = 12108

121.08

400

2.25 / 5

0.45

400

541.76 / 6

90.29

400

907.5 / 5 = 181.5

True

500

480.56 / 4

120.14

500

1012.16 / 4 = 25304

253.04
500

8.32 / 8

1.04

500

7497.63 / 7

1071.09

500

16 844.32 / 4 = 4311.08

False

4211.08

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