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Basic Facts
Properties
Word Problems
Grab Bag
100
Model: 6x7 using a number line
.____.____._____._____._____._____. 0 7 14 21 28 35 42
100
5x6
5x6=30
100
What is the answer to a multiplication problem called?
The answer to a multiplication problem is the product.
100
Lily has 7 packs of paper plates. Each pack contains 8 paper plates. How many paper plates does Lily have in all?
7x8=56 Lily has 56 paper plates.
100
8x4=
8x4=32
200
Model 7 x 8 using an array
1 2 3 4 5 6 7 8 1 o o o o o o o o 2 o o o o o o o o 3 o o o o o o o o 4 o o o o o o o o 5 o o o o o o o o 6 o o o o o o o o 7 o o o o o o o o =56
200
6x8=
6x8=48
200
What is this model called? o o o o o o o o o o o o o o o o o o o o o o o o
This model is called an array.
200
Kathy has 6 spiders. Each spider has 8 legs. How many legs do the spiders have in all.
6x8=48 There are 48 legs.
200
49÷7=
49÷7=7
300
Model 9x8 using skip counting
8+8+8+8+8+8+8+8+8=72
300
9x7=
9x7=63
300
What is the commutative property?
The commutative property says that 4x5=5x4
300
Jim packs 63 pencils into some boxes equally. Each box contains 9 pencils. How many boxes does Jim use?
63÷9=7 Jim uses 7 boxes.
300
8 times 4 is the same as: a) 4x8 b) 5x6 c) 8x3 9) 2x9
a) 4x8
400
Model 8x5 using the distributive property
(4x5) + (4x5) =40
400
81÷9=
81÷9=9
400
Write an example of the distributive property.
6x3=18 (3x3) + (3x3)= 9+9=18
400
Ben is 6. I am 4 times as old as Ben. How old am I?
I am 24.
400
4x2x5=
4x2=8 8x5=40 so 4x2x5=40
500
Model 3 ways to show 7x6
Options: number lines arrays distributive property commutative property
500
54÷9=
54÷9=6
500
What property states that changing the way numbers in a multiplication sentence are grouped and multiplied does not change the answer.
The associative property says that numbers can be grouped any way in a multiplication sentence.
500
A cow has 4 legs and a chicken has 2 legs. There are 6 dogs and 5 chickens in a barn. How many legs are there in all?
4x6=24=#of dog legs 2x5=10=# of chicken legs 24+10=34 legs in all
500
7x8=5+4+17+30
7x8=5+4+17+30 Check: 7x8=56 5+4+17+30=56 so 56=56