Grade 3- Math - Chapter 3 Review

Vocab

100

True or False?

Difference is the kind of math you can do in your head?

False

200

True or False?

The unknown is the missing number in a math problem.

True

300

True or False?

When rounding, you look to the right of the place value you are rounding to.

True

400

Name the property of addition that lets us change the order in which we add numbers but still get the same answer.

Communitive Property

Compare

100

564 O 565

<

200

125+12 O 128+7

>

300

1,526 O 4,699

<

400

$5000-$233 O $6542-$1775

=

Subtract

100

42-29

13

200

126-68

56

300

1,400-1,328

72

400

8,423-7,299

1,124

Round, THEN Subtract

100

TENS

345-278

70

200

HUNDREDS

1,488-1,249

300

300

TENS

4,562-1,977

2580

400

HUNDREDS

14,977-6,449

8,600