Subtraction Unit Test Review

Rounding

100

Estimate the difference by rounding:

73-26

40

200

Estimate the difference by rounding to the nearest 10.

228-41

190

300

Estimate the difference by rounding to the nearest 10.

969-311

660

400

Estimate by rounding to the greatest place value:

228-41

160

Subtraction- no regrouping

100

97-45

52

200

64-21

43

300

782-251

531

400

9041-31

9010

Subtraction- 1 regroup

100

385-77

308

200

790-381

409

300

991-87

904

400

62-39

23

Place value

100

In the number 45, what digit is in the 10s place?

4

200

In the number 143, what number is in the hundreds place?

1

300

In the number 643,221 what digit is in the thousands place?

3

All the things

100

Find the missing number:

17-____=8

9

200

Choose the basic fact that could be used to complete the extended fact. 

110-____=80

a. 6+5=11

b. 11-3=8

b. 11-3=8

300

Choose the basic fact that could be used to solve the extended fact.

130-_____=60

a. 13-7=6

b. 13+6=19

c. 8+5=13

a. 13-7=6

130-70=60