Breaking Apart to add
Rounding to the Nearest 10
Rounding to the Nearest 100
Add on to Subtract
Standard Strategies
What is it Between
100

Break apart to add


63+22=

85

100

Round to the nearst 10

46

50

100

Round to the nearest 100

167

200

100

Add on to subtract

18-9=

9+___=18 

9

100

Solve

132+243=

375

100

Between which two hundreds will you find 243

200 and 300

200

Break apart to add

235+362=

597

200

Round to the nearest 10

163

160

200

Round to the nearest 100

449

400

200

Add on to subtract

98-25

25+____=98 

73

200

456+287=

743

200

Between which two 10 will you find 75?

70 and 80

300

Break apart to solve

726+157=

883

300

Round to the nearest 10

398

400

300

Round to the nearest 100

35

0

300

Add on to subtract

47+3+___=80

80-47=

47+3+30=80


80-47=33

300

648-523=

125

300

Between which two 10 will you find 536

530 and 540

400

Break apart to solve

673+346

1019

400

Round to the nearest 10

3463

3460

400

Round to the nearest 100

955

1000

400

Add on to subtract

145+5+____+2=202

So, 202-145=

50

57

400

608-299=

309

400

Between which two hundreds will you find 925

900 and 1000
500


The sum of the equation below is written using hundreds, tens, and ones. Fill in the blanks to complete the answer. Then tell me what is the final sum. 


479+256= 6 hundreds+___ tens + ___ones


479+256= _______

6 hundreds + 12 tens + 15 ones

735

500

Round to the nearest 10

2403

2400

500
Round to the nearest 100


34672

34700

500

178+2+___+30=510


So, 510-178= 

178+2+300+30=510

So, 510-178=332

500

700-254

446

500

Between which two 10s will you find 4385

4380 and 4390