Estimating
Adding and Subtracting Decimals
Multi-digit Multiplication
Rounding Decimals and Whole Numbers
Multi-Digit Addition and Subtraction
100

What is an estimate for the sum of 67 and 34?

100, 90 

100

What is 5.2 + 3.4?


8.6

100

What is 23 × 4?

92

100

Round 3.76 to the nearest whole number.

4

100

What is 456 + 234?

690

200

Estimate the difference between 128 and 49.

80, 100, somewhere in between 80 and 100

200

Calculate 7.5 - 2.8.

4.7

200

Calculate 15 × 6.

90
200

What is 5.36 rounded to the nearest tenths?

5.4

200

 Calculate 872 - 459

413
300

When estimating 456 + 233, what is the nearest hundred?

700

300

Add 12.45 + 3.67.

16.12

300

Multiply 32 × 15.

480

300

Round 47.89 to the nearest whole number.

48

300

Add 1,234 + 567.

1,801

400

f you estimate 69.5 + 28.7, what is the closest whole number?

99, 100

400

Subtract 15.6 - 9.45.

6.15

400

What is 46 × 37?

1,702

400

 If you round 2.47 to the nearest whole number, what do you get?

2

400

What is 3,456 - 1,234?

2,222

500

What do you estimate 1,345 - 678 to be when rounded to the nearest hundred?

600

500

What is the sum of 23.78 + 18.22?

42

500

 Find the product of 123 × 12.

1,476

500

What is 158 rounded to the nearest hundred?

200

500

Find the result of 2,345 + 4,678.

7,023

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