Rounding
Estimating
Addition
Subtraction
Mixed Bag
100

What is 0.755 rounded to the nearest hundredth?

0.76

100

Estimate the difference of 1.4 − 0.3 = ________ by rounding each number to the nearest whole number.

1

100

What is the sum of the addition equation 0.49 + 0.31?

0.8

100
Find the difference of 0.77 - 0.2

0.57

100

Estimate the difference of 6.09 - 2.42 by rounding each number to the nearest tenth. 

3.7

200

What is 12.094 rounded to the nearest tenth?

12.1

200

What is a reasonable estimate for the subtraction equation 5.8 − 3.1 = ________ when you round each number to the nearest whole number? 

2       4         3        9

3

200

What is the value of the expression 2.15 + 1.56?

3.71

200

What is the value of the expression 1.87 − 0.34 - 0.1?

1.43

200

Solve 3.5 + 12.3 - 6.7

9.1

300

Select the number that will have a 3 in the tenths place after rounding?


4.35      5.03      6.28      7.39



6.28

300

What is a reasonable estimate for the addition equation 4.4 + 2.2 = ____________ when you round each addend to the nearest whole number?

6

300

Solve the equation 1.05 + 5.2 + 2.1 = ________.

8.35

300

Solve the subtraction equation 4.86 − 2.21 − 0.57 = ?

2.08

300

What is the sum of 0.75 + 1.2 + 0.25?

2.2

400

Select the number that when rounded to the nearest whole number would NOT be 3

3.499     2.5      3.09     2.278     

2.278

400

If you round each number to the nearest tenth, what would be the best estimate for 3.45 + 12.245 - 1.59?

14.1

STEP ONE: 3.5 + 12.2 = 15.7

STEP TWO: 15.7 - 1.6 = 14.1

400

What is the sum of 13.15 + 1.97 + 21.5 = ________?

36.62

400
Solve 12.9 - 3.4 - 2.05

7.45

400

Two bags of cereal are packed in a box. The total weight of the box and the two bags of cereal is 20.00 ounces. One bag of cereal weighs 4.07 ounces, the other weighs 5.15 ounces. How much does the box weigh?

10.78 ounces