Addition
Subtraction
Reasonable Estimate
Problems
Decompose
100

What is the sum? 2,349+8,254

10,603

100

What is the difference? 17,425-3,680

13,745

100

Which is a reasonable estimate for the sum 31,732+43,812. Hint: round to the nearest thousand

32,000+44,000=76,000

100

Rick has $45,836 to give to three charities. He gives one charity $12,400. How much money does Rick have left for the remaining charities?

$33,436

100

74,231

70,000+4,000+200+30+1

300

What is the sum? 63,417+22,480

85,897

300

what is the difference? 85,476-74,231

11,245

300

What is a reasonable estimate for the sum 25,409+24,580

25,000+25,000=50,000

300

Jasmine and Tara are saving money to buy a scooter together. So far, they have $2,482 in their bank account. Jasmine has put in $1,139. How much money has Tara put into the bank account?

$1,343

300

7,562+1,413

7,000+500+60+2+1,000+400+10+3

500

What is the sum? 282,640+8,950

301,590

500

What is the difference? 834,699-203,450

631,249

500

What is a reasonable estimate for the difference 5,724-3,412? 

6,000-3,000= 3,000

500

The Smith family goes on a summer road trip. They will drive a total of 1,645 miles. They drive 580 miles and stop. They drive another 612 miles before stopping a second time. How many miles are left to drive?

453 miles

500

6,500+2,345

6,000+500+2,000+300+40+5