Rounding
Adding Decimals
Subtracting Decimals
Estimate
Word Problems
100

Round 2.34 to the nearest tenth 

2.30 or 2.3

100

3.2 + 2.1

5.3

100

4.3 - 2.1

2.2

100
Estimate 2.3 + 5.2

7

100

Felipe needs to run two miles for soccer team tryouts. He ran his first mile in 11.56 minutes and his second in 11.12 minutes. What is his combined time for the two miles?

22.68

200

Round 2,341.23 to the nearest whole number

2,341.00

200

22.7 + 4.9

27.6

200

6.71 - 2.31

4.4

200

Estimate 12.6 + 15.2

28

200

Erin worked 25.75 hours last week and 17.25 hours this week. How many total hours did she work in these two weeks? 

43

300

What is 3.962 rounded to the nearest hundredth?

3.960

300

2.345 + 2.346

4.691

300

123.56- 78.20

45.36

300

Estimate 2.09 + 3.21

300

Manny has a ranch that is 15.47 acres. Jason has a ranch that is 12.55 acres. How many more acres is Manny's ranch than Jason's?

2.92 acres

400

Round 4.569 to the nearest whole number

5.000

400

3,215.23 + 546.101

3,761.331

400

45.321- 42.671

2.65

400
Estimate 11.20 + 23.80

35

400

The Ming family spent 15$ on Lunch and $7 on dessert. What is a way to find out how much change they would get from 30$

15 + 7 = 22

30 - 22 = 8 

500

Round 4,987,321.756 to the nearest ten thousands place

4,990,000.000

500

245.76 + 56.412

302.172

500

14.69 + 21.32 + 3.45

39.46

500
Estimate 9.45 + 20.51 + 30.05 + 3.1

63

500

At the store, Nela bought a rose for $4.59, a carnation for $5.39, and a tulip for $3.79. Round to the nearest dollar to determine about how much Nela spent.

about 14$