Multiplying by Multiples of Ten
2 x 80?
160
Ann has 2 rows of 8 pictures. How many pictures does she have?
16
Which is equal to 7x9?
A. (3x9) x (4x9)
B. (7x3) + (7x8)
C. (3x9) + (4x9)
C
12 x 5 = 5 x 12
Commutative
5, 10, 15, 20, ___
25
9x 50 ?
450
Kate bought 4 boxes of 8 cookies. She then ate 6 cookies. How many cookies are left?
26
Which is equal to 6x5?
A. (3x5) x (4x5)
B. (3x5) + (3x5)
C. (3x9) + (4x9)
B
7x 4 = 4 x 7
Commutative
7, 14, 21, ___
28
There are 4 buses. Each bus holds 80 people. How many people are there total?
320
Jen has 8 rows of 7 pictures. How many pictures does she have?
56
Which is equal to 6x13?
A. (6x10) x (6x3)
B. (5x13) + (8x8)
C. (6x10) + (6x3)
C
(5x3) + (5x 4)
Distributive
23, 19, 15, 11, ___
7
9 x 90 =
810
Earl buys 3 boxes of cookies. Each box has 5 chocolate chip cookies and 4 sugar cookies. How many cookies did he buy?
27
What number correctly fills in each blank?
3x __ = 18
___ x 7 = 42
24 divided by 4 = ___
6
1,256 x 5 = 5 x 1,256
Commutative
What is the rule?
23, 19, 15, 11,
- 4
There are 7 planes. Each plane holds 60 people. How many people are there?
420
Leah buys 5 boxes of markers. Each box has 3 blue markers and 5 red markers. How many markers did she buy?
40
I wrote 9 x __ =45
Which expression can help me solve this problem?
A. 45 divided by 9
B. 9 x 45
C. 45 + 9
A
(3 x 8) + ( 9 x 8 )
Distributive Property
What is the rule?
2, 4, 8, 16,
x 2