Stacy and her 4 friends decide to share a cab to go to the beach. If they each spent $5, how much did the cab ride cost altogether? Write an equation using a letter to represent the unknown and solve.
5 x $5 = c
c = $25
100
What is the product of 4 and 20?
80
100
2 x 1
2
100
Find the missing number.
3 9
4 12
5 ?
6 18
15
100
Use the distributive property to break apart the 12 in the following equation:
12 x 3 =
Then solve.
(6 x 3) + (6 x 3)
18 + 18
36
200
Stacy's 4 friends bought a slice of pizza for $7 each and a pop for $2 each. How much did her friend's spend altogether.
$7 + $2 = $9
$9 x 4 = $36
200
Find the product. 2 x 7 tens = _________
2 x 70 = 140
200
6 x 4 =
24
200
What is the pattern?
IN OUT
2 4
4 8
6 12
8 16
The pattern is multiplying by 2
200
Mrs. Asquith wants to ship 48 books. She can fit 6 books in each box. How many boxes will she ship? Write an equation with a letter for the unknown. Then solve.
48 divided by 6 = b
b = 8
300
Stacy bought just a taco for lunch for $9. How much did she spend on lunch?
$9
300
What is the product of 3 and 40?
120
300
8 x 6 =
48
300
Find the missing number.
5 25
6 30
7 ?
8 40
35
300
Mrs. Hirsch has a piece of string that is 4 feet long. Mrs. Mueller has string that is 30 feet long. How many times longer is Mrs. Mueller's string than Mrs. Hirsch's? Write an equation with a symbol for the unknown. Then, solve.
4 x 30 = s
120 = s
400
3. After lunch, the friends notice a sale.
$24 $30 $36 $42 $48
$4 $5 $6 $7 $8
If all sale prices were calculated in the same way, what is the pattern of the sale price?
Each price was divided by 6.
400
Find the product. 8 x 9 tens = __________
8 x 90 = 720
400
9 x ______ = 81
9
400
What is the pattern?
IN OUT
6 36
7 42
8 48
9 54
Multiplying by 6
400
Hector solves 9 × 8 by subtracting 1 eight from 10 eights. Draw a model, and explain Hector’s strategy.
10 x 8 = 80
80 - 8 = 72
9 x 8 = 72
500
Amy has 4 pens. Each pen has 3 stars on it. What is the total number of stars Amy has on her pens?
4 x 3 = 12 stars
500
What is the product of 5 and 80?
400
500
7 x _______ = 56
8
500
Find the missing number. 648 7 ? 864 972
56
500
Use the break apart and distribute strategy to solve the following problem. Draw a model to solve.
7 × 8 =_____