Adding
Subtracting
Subtracting across Zeros
Estimation
100

4,153 + 2,988

7,141

100

22,283 − 14,169

8,114

100

Find 3,000 - 2,450

550

100

Estimate each sum or difference

8,352 − 3,421

8,000 - 3,000 = 5,000

200

92,425 + 31,675

124,100

200

9, 6 0 1 - 9 3 9 =

𝖠 9,338

𝖡 1,932

𝖢 9,372

𝖣 8,662

D 8,662

200

1,440 − 933

507

200

Estimate each sum or difference

652,198 + 49,753

600,000 + 50,000 = 650,000 

300

7, 2 3 6 + 5, 9 5 7 + 2, 1 3 5 =

15,328

300

1 0, 8 8 1 - 4, 9 6 0

5,921

300

6,090 − 5,130

960

300

5,753 

2,250 

3,160

11Write and solve an equation to find the total attendance.

11,163

400

572,941 + 181,662

754,603

400

 2 6, 5 7 5 - 1 7, 0 8 8

9,487

400

11,246 − 9,489

1,757

400

5,753 

2,250 

3,160

Estimate the total attendance by rounding each number in the table to the nearest thousand and finding the sum.

6,000

2,000

3,000

= 11,000

500

215 + 8,823

9,038

500

47,676 − 16,521

31,155

500

790,008 − 643,829

146,179

500

Estimate each sum or difference

142,968 + 44,456

140,000 + 40,000 = 180,000

M
e
n
u