Estimating Decimals
Adding Decimals
Subtracting Decimals
Word Problems
100

Estimate 358 + 293 to the nearest hundred

What is 700?

100

Add 0.02+0.89

What is 0.91? 

100

Subtract 0.67-0.31

What is 0.36?

100

Estimate the Sum of $4.28, $21.35 and $14.65 by rounding each number to the nearest tenth 

What is $40.40?

200

Estimate 15.01 - 4.4 to the nearest whole number

What is 11?

200

Add 0.34+0.34

What is 0.68?

200

Subtract 0.81-0.78

What is 0.03?

200

What is the Sum?

5.92+3.48

 9.40

300

Estimate 80.01+2.89 to the nearest whole number.

What is 83?

300

Add 0.166+0.87

What is 1.036?

300

Subtract 0.77-0.20

What is 0.57?

300

What number makes this number equation true?

5.26+____=13.63

What is 8.37

400

Estimate 25,003-12,900 to the nearest thousand 

What is 12,000

400

Add 0.52+0.50

What is 1.02?

400

Subtract 0.203-0.101

What is 0.102?

400

Owen spent $1.29 on a pen and $0.38 on an eraser at the school store. What is the total amount of money he spent?

What is $1.67

500

Estimate $13.23 + $19.56 to the nearest dollar

What is $33 dollars?

500

Add 1.325+6.752 

What is 8.077?

500

Subtract 1.00-0.56 

What is 0.44?

500

Two rock samples have masses of 56.24 grams and 8.98 grams. What is the estimated total mass if you rounded the numbers to the nearest tenth? 

What is 65.2?