L.1
Donald and Mickie went to a video game store. They played 5 games that cost 5 dollars each. What was the total cost?
20 Dollars
Use Repeated Subtraction to find 20 / 4?
20 - 4 =16 Ans: 5
16 - 4 = 12
12 - 4 = 8
8 - 4 = 4
4 - 4 = 0
What is the total of 5 groups of 20?
5 x 20 = 100
100
Daniel drew 5 times as many pictures as Sam. Daniel drew 30 pictures. How many pictures did Sam draw?
5 x P = 30
P = 6
6
The answer to a division problem.
Quotient
Find the unknown.
____ / 7 = 8
7 x 8 = 56
___ = 56
Use repeated Subtraction to find 15 / 3 =
15 - 3 = 12 Ans: 5
12 - 3 = 9
9 - 3 = 6
6 - 3 = 3
3 - 3 =0
Markus has 35 t-shirts in his closet. He has 7 times as many purple shirts as his does blue shirts. How many blue shirts does he have?
7 x __ = 35
5
Nick made 32 cupcakes. This is 4 times the number of cupcakes Derrick made. How many cupcakes did Derrick make?
4 x C = 32
C = 8
8
A group of related facts using the same number.
Fact Family
7 x 3 = 21
3 x 7 = 21
What is the remaining facts in this fact family?
21 / 7 = 3
21 / 3 = 7
Jenny bought 8 dresses from a clothing store. While she was at the store, she spend a total of 64 dollars.
How much did each dress cost?
64 / 8 = 8
8 Dollars per dress.
What is 9 times as many as
O O O O O
9 x 5 = 45
45
Aaron has badminton class 4 days a week. David has badminton class 8 times a week. How many more times does David have badminton class than Aaron?
4 + B = 8
B = 4
4
The smaller number being divided.
Divisor
9, 10, 90 are numbers in a fact family.
What is the fact family of these numbers
9 x 10 = 90
10 x 9 = 90
90 / 10 = 9
90 / 9 = 10
Mike buys a CD collection of his favorite music. Each CD has 12 songs. There are 72 songs in total. How many song are in the CD collection?
72 / 12 = 6
6 CDs
There are 8 times as many blue balloons as green balloons. There are 5 green balloons. How many balloons are there?
8 x 5 = 40
40
There are 7 fewer red markers than blue markers. There are 8 red markers. How many blue markers are there?
M - 7 = 8
M = 15
The word or phrases times as many, times more and times as much are used for problems involving...
Multiplication or comparison problems.
John's mom gave him and his three brother 40 dollars to spend at a water park. If each brother gets the same amount, how much do they each have to spend?
40 / 4 = 10
10 Dollars
How are operations of repeated subtraction related?
Explain.
The number of times the same number is subtracted from another number until you reach is quotient or answer to the problem in the related division problem.
Why can a bar diagram be helpful when planning to solve a multiplication problem?
It helps the person visualize the information from the problem and organizes it to solve it.
At a ball factory, Machine A can produce a soccer ball in 10 minutes. Machine B can produce the same ball in twice as long.
If the two machines are turned on at the same time, how many soccer balls will be produced after 1 hour.
Machine A 1 hour or 60 mins / 10 mins = 6 Balls
Machine B 1 hour or 60 mins / 20 mins = 3 Balls
6 ball + 3 ball = 9 balls
9 balls in 1 hour.
The Additive Comparison uses one of three phrases?
how much more
how many more
how much less