Open Number Line
What's the Equation
Word Problems
Random
Multiples of Ten
100
Solve 5 x 20 using an open number Line
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5 jumps of 20
20, 40, 60, 80, 100
100
2 x 20 = 40
100
Franklin raked leaves for 4 neighbors. Each neighbor paid him $30. How much did he earn raking leaves?
4 x $30 = $120
100
Choose the correct answer.
The multiples of 4 are ______ the multiples of 2.
equal double half less than
double
2x3=6 and 4x3=12
100
What is a multiple of 10?
Any number that has one of the factors as ten.
200
#8 Alice reads 50 pages each day. How many pages does she read in 7 days?
Use the open number line to solve.
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7 jumps of 50 =350 pages
200
6 x 20 = 120
200
Information
Trimming bushes - $20
Weeding flower bed- $20
Franklin trimmed bushes for 2 neighbors. How much did Franklin earn?
trimming- 2 x $20- 2 jumps of 20 = 20, 40
2 x 20 = 40
200
Susan wants to decompose the array for 7 x 8 into two facts she knows. 
Susan knows 7x5 is 35. What should she add to 35 to find the product of 7 x 8?
21
7 x 8 = 35 + 21
7 x 8 = 56
200
7 x 50
350
300
Use an open number line to solve
4 x 90
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4 jumps of 90
90, 180, 270, 360
300
2 x 70 = 140
300
Betty is making bracelets and needs 8 boxes of beads. Each box of beads contains 20 beads.
How many beads does Betty need?
8 x 20 = 160 beads
300
Write an equation that represents Sergio's problem. 
2 x 7 = 14
300
What is short cut for multipling by ten.
the product is the other factor that is not ten with a zero after it, in the ones place
400
Bethany earns $40 babysitting on Saturday. How much does Bethany earn for babysitting on 4 Saturdays?
Use a number line to solve the problem.
Show another way to solve the problem.
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4 jumps of 40
0, 40, 80, 120, 160
$160
Associative Property
4 x 40 = (4 x 4) x 10 =160
Distributive Property
4 x 40 = (2 x 40)+(2 x 40) = 160
400
4 x 40 = 160
400
The subscription to a children's magazine is $30 per year. Jane sold 7 subscriptions.
What was the total cost of the subscriptions?
7 x 30 = 210
400
Write an equation to represent Ana's problem. 
2 x 70 = 160
400
write all the multiples of Ten from 1- 100
10, 20, 30, 40, 50, 60, 70, 80, 90, 100
500
#1 Adam gives each of his 5 friends a baseball card album. Each album holds 30 cards. How many cards can the albums hold in all?
-Use the open number line to solve.
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5 Jumps of 30
5x30=150 baseball cards
500
9 x 30 = 270
500
Mr. Blaine is building a deck and bought 9 boxes of bolts. There are 40 bolts in each box.
How many bolts did Mr. Blaine buy?
9 x 40 =
360 bolts
500
How are Ana's and Sergio's problem alike and different. 
Answers will vary.
500
Complete the multiplication table
X 10 20 30
7 70 140 ?
8 80 ? ?
9 ? 180 ?
As you move down the columns, the numbers __________ by the value of the column.
X 10 20 30
7 70 140 210
8 80 160 240
9 90 180 270
As you move down the columns, the numbers increase by the value of the column.