Add Decimals
Estimate the Sum/Difference
Subtract Decimals
Rounding
Problem Solving
100
1.20 + 0.34
What is 1.54?
100

12.03 + 6.8

What is 19?

100

7.2 - 4.3

What is 2.9?

100
Round 5.67 to the nearest tenth

What is 5.7?

100

A swimmer is in a 100 meter race. She swims the first half of the race in 32.34 seconds and the last half of the race in 34.83 seconds. It took her ___________ seconds to finish the whole race. 

What is 67.17 seconds?

200
12.25 + 11.25
What is 23.50 or 23.5?
200

2.8 + 1.3

What is 4?

200

12.56 - 3.75

What is 8.81?

200

Round 6.894 to the nearest hundredth

What is 6.89?

200

Jane buys an apple for $0.75 and pays with a $5.00 bill. How much change will she get? 

What is $4.25?

300

34.6 + 12

What is 46.6?

300

34.24 + 3.99

What is 38 or 38.25?

300

74.32 - 8.76

What is 65.56?

300

Round 14.194 to the nearest whole number

What is 14?

300

Kelly scored 56.73 points and Karen scored 74.92 points on a University exam. How many points less did Kelly score than Karen?

What is 18.19 points?

400

145.05 + 56.87

What is 201.92?

400

$11.26 + 65.49

What is $76.75 or $76?

400

68.097 - 21.983

What is 46.114?

400

Round 0.483 to the nearest tenth and hundredth

What is 0.5 and 0.48?

400

Katherine bought cosmetic items which cost $78.12 in total. She gave $100 to the shop keeper. How much does she receive as change?

What is $21.88?

500

43.32 + 786.045 =

What is 829.365?

500

873.054 + 32.67

What is 906?

500

872.67 - 34.085

What is 838.585?

500

Round 37.486 to the nearest whole number, tenth, and hundredth

What is 37, 37.5, and 37.49?

500

Lizbeth had saved $105.65. She gave away $34.08 to charity and bought a new bike helmet for $29.97. How much (in dollars and cents) money did she have left over?

What is $41.60?