Subtracting Decimals
Luck of the Draw
Rounding Decimals
Estimating Sums
& Differences
Adding Decimals
100

Subtract the decimal 16.82 - 5.21 

What is 11.61

100

What is 4.792 rounded to the nearest hundredth?

What is 4.790 or 4.79 

100

Round the decimal to the given place-value. 5.031; hundredths

What is 5.03

100

Estimate using rounding. 38.23 + 11.84

What is 38 + 12 = 51

100

Add the decimals 43.28 + 31.45

What is 74.73

200

Subtract the decimal 4.08 - 2.12 

What is 1.96 

200
Addy swam 3 miles for her swim practice. She swam the first mile in 13.45 minutes. She swam her second mile in 13.25 and her last mile in 13.15. What is her combined time for the three miles 

What is 39.90

200
Round the decimal to the given place-value. 0.00042; ten-thousandths
What is 0.0004
200
Estimate using Rounding. 75.38 + 22.04
What is 75. + 22 = 97
200

Add the decimals 0.724 + 6.458

What is 7.182

300

Subtract the decimal 7.8 - 4.9 

What is 2.9 

300

Mrs Buford has yarn that is 19.945 meters long. What is 19.945 rounded to the nearest hundredth?

What is 19.95 or 19.950 

300
Round the decimal to the given place-value. 27.35; tens
What is 27
300
Estimate using Front-End Estimation 31.29 + 58.07
What is 31. + 58 = 89
300

Add the Decimals 1.325 + 0.081

What is 1.406

400
The Pyramid of Khafre measured 143.5 meters high. The Pyramid of Menkaure measured 65.5 meters high. What is the difference in the heights of these two pyramids?

What is 78 meters 

400

Mrs. Hays worked 40.23 hours last week. She worked 30.13 hours this week. How many total hours did she work these past two weeks?

What is 70.36 
400
Round the decimal to the given place-value. 3.4553; thousandths
What is 3.455
400
Estimate using clustering 12.045 + 11.81 + 12.3 + 11.56
What is 12. + 12. + 12. + 12. = 48
400

Add the decimals 48.93 + 21.36

What is 70.29

500
The average person's upper leg bone measures 19.88 in and the lower leg bone measures 16.94 in. How much longer is the upper leg bone than the lower leg bone?

What is 2.94 in 

500

Estimate 15.76 + 2.59 

What is 19 

500
Round the decimal to the given place-value. 2.059; hundredths
What is 2.06
500
Estimate using clustering. 6.45 + 5.88 + 5.61 + 6.03
What is 6 + 6 + 6 + 6 = 24
500

Add the decimals 248 + 131.48

What is 379.48

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