Topic 4 Review

Mental Math

100

Using a mental math strategy what is 287+133=?

420

200

Using the break apart method, break apart 53+88 and find the sum.

141

300

Using the break apart method, break apart 676-521 to find the sum.

155

400

Using the break apart method, break apart 283-169 to find the sum.

114

500

Using the break apart method, break apart 372+226 to find the sum. 

598

Estimation

100

Round each number to the near hundred to estimate the sum of this math sentence:

473+465 

1,000

200

Round each number to the near hundred to estimate the sum of this math sentence:

586-483

100

300

Round each number to the near hundred to estimate the sum of this math sentence:

981+193=

1,200

400

Round each number to the near hundred to estimate the sum of this math sentence:

748-392=

300

500

Round each number to the near hundred to estimate the sum of this math sentence:

1,440-933=

500

Addition

100

Add:

215+8,823=

9,038

200

Add:

852+138=

990

300

Add:

   14,296

+     444

_____________

14,740

400

Add

572+941=

1,513

500

Add:

14,382 + 9,243=

23,625

Subtraction

100

Subtract 

831-796=

35

200

Subtract:

415-323=

92

300

Subtract:

735-255

480

400

Subtract:

4,978-2,766=

2,212

500

Subtract:

651-482=

168

Review

100

7x6

42

200

8x3

24

300

5x12

60

400

20 x 8

160

500

70 x 8=

560