multiplication
Division
Compare
Choosing the Correct Units and Rounding
Subtraction to find differences
Adding numbers
100

2 x 2

4

100

20 ÷  2

10

100

Which number is greater? 24,518 or 24,815

24,815

100

Which unit would you use to measure the length of a pencil—inches or miles?

inches

100

What is the difference between 15 and 7?

8

200

7 x 7

49

200

25 ÷ 5

5

200

Put these in order from least to greatest: 9,201   9,210   9,102

9,102   9,201   9,210

200

You want to measure how much water is in a water bottle. Would you use liters or pounds?

Liters

200

42 − 18 =

24

300

2 x10

20

300

2 ÷ 1

2

300

Which place value do you compare first when comparing multi-digit numbers?

The place farthest to the left (largest place value)

300

Round 243 to the nearest hundred.

200

300

8 + 7 =

15

400

10 x 5

50

400

12 ÷  4

3

400

Which number is less? 56,473 or 56,347

56,347

400

678 to the nearest hundred.

700

400

256 + 100 =

356

500

456 x 0

0

500

10 ÷  5

2

500

Put these numbers in order from greatest to least: 84,009   84,900   84,090

84,900   84,090   84,009

500

Round 3,746 to the nearest hundred.

3,700

500

Ana read 24 minutes, Ben read 35 minutes, and Carlos read 23 minutes. How many minutes did they read in total?

82 minutes

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