Subtracting
Adding
Multiplying
Rounding
Definitions
100

548 - 321 = ?

227

100

438 + 397 = ?

835

100

4 x 8 = ?

32

100

Round 492 to the nearest hundred.

500

100

What is a product? 

The answer to a multiplication problem.

200

8,601 - 4,598 = ?

4,003

200

6,645 + 4,027 = ?

10,672

200

7 x 9 = ?

63

200

Round 32,084 to the nearest ten thousand.

30,000

200

What is a prime number?

A number that only has factors of one and itself.

300

16,934 - 15,999 =?

935

300

90,405 + 4,854 = ?

95,259

300

11 x 4 = ?

44

300

Round 489,734 to the nearest thousand.

490,000

300

What is a composite number?

All numbers that have more than two factors.

400

437,210 - 82,109 = ?

355,101

400

323, 093 + 99, 878 = ?

422,971

400

12 x 3 = ?

36

400

Round 475,929 to the nearest ten thousand.

480,000

400

What are the TWO rules for rounding numbers?

4 or less, let it rest.

5 or more, raise the score.

500

5,329,003 - 456, 789 = ?

4,872,214

500

7,113, 567 + 65,909 = ?

7,179,476

500

12 x 9 = ?

108

500

Round 5,999,769 to the nearest thousand. 

6,000,000

500

What does sum mean?

The answer to an addition problem.