Rounding
Addition
Estimation
Subtraction
Place Value/Compare Numbers
100

Round 55 to the nearest ten.

60

100

Add 45 + 79.

124

100

Estimate the sum of 67 + 25 by rounding to the nearest hundred.

100

100

Subtract 48 - 9 using mental math.

48 - 8 - 1

48 - 8 = 40

40 - 1 = 39

100

What is the value of the 8 in the number below?

789

80

200

Round 245 to the nearest hundred.

200

200

Add 570 + 672.

1,242

200

Estimate the difference of 89 - 67 by rounding to the nearest ten.

20

200

Subtract 567 - 399.

168

200

What place is the number 6 located in?

6,790

The thousands place.

300

Round 1,986 to the nearest ten.

1,990

300

Which equation is equivalent to 5 + 8 + 2?

a. 8 + 4

b. 5 + 10

c. 5 + 8

b. 5 + 2

300

Kevin saw a shirt for $45 and a pair of shoes for $154. About how much money does Kevin need to purchase both items? (Round to the nearest ten.)

He needs about $200.

300

Kennedy went to Dave and Busters with 178 points on her card. She spent 95 points on playing games. How many points does she have left on her card?

She had 83 points left.

300

What place value is the 3 in?

13542

thousands

400

Round 5,350 to the nearest hundred.

5,400

400
How can we add 245 + 8 using mental math?

245 + 5 + 3

245 + 5 = 250 

250 + 3 = 253

400

Estimate by rounding to the nearest hundred. 567 + 1,250

1,900

400

Subtract 5,456 - 1,789.

3,667

400
Which equation is equivalent to 4,567?


a. 400 + 500 + 60 + 7

b. 4,000 + 500 + 60 + 7

c. 4,000 + 50 + 60 + 7

d. 4,000 + 500 + 6 + 7

b. 4,000 + 500 + 60 + 7

500

Round 45,152 to the nearest ten and nearest hundred.

Nearest ten: 45,150

Nearest hundred: 45,200

500

Add 6,985 + 10,678. 

17,663

500

Estimate by rounding to the nearest hundred. 2,894 - 1,872

1,000

500

Subtract 56,000 - 43,872.

12,128

500

Fill in the blank with =, <, or >.

67,478 ___ 67,487

67,478 < 67,487