Rounding Decimals
Estimate Sums and Differences
Add Decimals
Subtract Decimals
100

I am 45.833 rounded to the nearest hundredth.

What is 45.83?

100

Round each decimal to the nearest one and add. 

4.204 and 2.779

What is 7?

100

I am 6.37 plus 2.96.

What is 9.33?

100

I am 28.34- 8. 

What is 20.34?

200

I am 2.88 rounded to the nearest tenth.

What is 2.9?  

200

Round each decimal to the nearest one and subtract. 

$18.93 and $5.38

What is $14.00

200

I am 3.25 plus 12.6 plus 18.93. 

What is 34.78?

200

I am 12 - 9.93.

What is 2.07?

300

I am 55. 23 rounded to the nearest ten. 

What is 60?  

300
Round each decimal to the nearest ten and add. 


$42.46 and $88.23

What is $130.00?  

300

Jacob has been looking for coins for three weeks with his metal detector.  Week one he found four quarters, two nickels, and three pennies.  Week two he found three quarters, a dime, three nickels, and two pennies.  Week three he found two quarters, 5 dimes, and a penny.  I am the amount of money Jacob found in all.  

What is $3.16?

300

Susie has $2.48.  She gives her brother 50 cents.  How much money does Susie have left? 

What is $1.98?  

400

The price of a gallon of orange juice rounded to the nearest dollar is $5.00.  I am the two amounts the actual price could be between. 

What is $4.50 and $5.59?

400

Round each decimal to the nearest ten and subtract.  

47.80 and 11.03

What is 40? 

400

I am the problem below that requires regrouping.  

3.51 + .81

41.233 + 21.42

4.09 + 51.90

What is 3.51 + .81?

400

I am the problem below that requires regrouping.  12.71- 3.8

3.4- 2.2

123.45 - 11.111

What is 12. 71 - 3.8?