Vocab
Multiplication
Divison
Rounding
Word Problems
100

Add

Joining numbers together to find a sum or total

100

1 x 1

1
100

4 / 1 

4

100

18

20

100

Rodrigo has 15 balloons. Desmond has 4 more balloons than Rodrigo. How many balloons does Desmond have?

19

200

Array

A group of objects arranged in equal rows and columns

200

5 x 3

15

200

9 / 3

3

200

72

70

200

Maleah has 16 pencils. Her teacher gives her 14 more. Then she finds 20 more pencils. How many pencils does Maleah have now?

50

300

Digit

Numbers 0-9 that can be used to make larger numbers

300

6 x 4

24

300

25 / 5

5

300

148

100

300

There are 79 lines on a piece of paper. 45 lines are black, 21 are green, and the rest are red. How many red lines are on the piece of paper?

13

400

Place Value

The value of a digit depending on its position within a number

400

7 x 8

56

400

48 / 6

8

400

975

1000

400

Hollis has 41 balloons. Cody has 12 more balloons than Hollis. How many balloons do they have in all?

94

500

Communitive Property (of Multiplication)

The order of how numbers are multiplied does not change the answer

(EX. 5 x 4 = 4 x 5)

500
11 x 7

77

500

63 / 9

7

500

88,543

90,000

500

There are 56 dice in a bag. The teacher adds 6 dice. Then, a student takes some dice from the bag. Now there are 28 dice in the bag. How many dice did the student take from the bag?

34