Math Review

Multiplication

100

2 x 9

18

200

5 x 6

30

300

0 x any number 

0

400

9 x 4 

36

500

8 x 8 

64

Subtraction

100

46 - 38

8

200

92 - 68

24

300

88 - 79

9

400

375 - 198

177

500

1,582 - 987

595

Addition

100

256 + 235

491

200

354 + 687

1,041

300

657 + 10 + 10

677

400

354 + 982

1,336

500

12,957 + 4,582

17,539

Place Value

100

Write the number:

5 hundreds

6 tens 

8 ones 

568

200

Write the number: 

8 hundreds 

9 ones 

6 tens 

869

300

Write the number: 

5 tens 

4 ones 

7 hundreds 

754

400

Write the number: 

7 thousands 

5 hundreds 

9 tens 

5 ones 

7,595

500

Write the number: 

7 tens 

9 ones 

3 thousands 

5 hundreds 

3,579

Miscellaneous

100

Round 87 to the nearest ten 

90

200

Round 736 to the nearest hundred 

700

300

Round 736 to the nearest ten 

740

400

Guess the number: 

two digits 

both digits are even 

the tens place is greater than 7 

the ones place is less than 3 

when rounded to the nearest 10 the number is 80 

82 

500

What property states that in addition and multiplication the order of numbers does not change the answer

ex: 2 + 3 = 6 , 3 + 2 = 6

Commutative Property