Word Problems
Multiplying by 10s
Fast Facts
Input/Output
Miscellaneous
100
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; the rule is to multiply by 3!

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?  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; the rule is multiplying by 5

300

Mrs. Hirsch has a piece of string that is 4 feet long. Mrs. Reisdorf has string that is 32 feet long. How many times longer is Mrs. Reisdorf's string than Mrs. Hirsch's? Write an equation with a symbol for the unknown. Then, solve.

4xs=32, s=8

400

After lunch, the friends notice a sale. $24->$4, $30->$5, $36->$6, $42->$7, $48->$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? 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. 6->48 7->?, 8->64, 9->54

56; the rule is multiplying by 8

500

Use the break apart and distribute strategy to solve the following problem. Draw a model to solve. 4 × 12 =_____

(4 x 10) = 40; (4 x 2) = 8; 40 + 8 = 48

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