Properties of Multiplication and Division
Solve.
6x7= ____x6
7
Solve.
6x____= 36
6
8x9=_____
72
Solve.
9x___=81
9
Solve.
3x20=
60
What is is called when you change the order of the numbers, but it does not change the answer?
Ex. 8x9=9x8
Commutative Property
Solve.
54÷6= ____
9
Solve.
64÷____=8
8
Solve.
8x9=_____
72
How many tens are in 320?
32
What is it called when you break apart a factor, then multiply and then add them back together to get the same answer?
ex. 7x6= (3x6)+ (4x6)
Distributive Proptery
Aidan went to the store. He bought 6 comic books. Each book cost $8. How much money did he spend in total?
Aidan spent $48 in total.
Solve.
8x____=56
7
Solve.
63÷9=____
7
Solve.
6x40=
240
Solve using distributive.
9x9= (____x____) +(____x____)
= _____+ _____
= ______
=(4x9)+ (5x9)
=36+45
=81
Avni and her 6 friends went to the movies. In total the tickets cost $42. How much did each ticket cost?
Each ticket costs $7.
Ms. Lauren divides 32 students in 8 equal groups. How many students are in each group?
Each group has 4 students.
Seiya bakes brownies for her 9 friends. If she bakes 36 brownies, how many brownies does each students get?
Each students gets 4 brownies.
Solve.
6x70
420
Solve using distributive property.
36÷6= (____÷ 6) + (____ ÷ 6)
= _____+_____
= _____
36÷6= (30÷6)+ (6÷6)
= 5+1
=6
Mizu spends 39 minutes going his homework. Then he does 6 chores. Each chore takes him 3 minutes. How many minutes does Mizu spend doing homework and chores
Mizu spends 57 minutes on homework and chores.
There are 8 bags of yellow and green balloons. Each bag contains 7 balloons. If there are 35 yellow balloons in total, how many green balloons are there?
There are 21 green balloons
Ms. Megan buys 8 boxes of granola bars for a class party. Each box has 9 granola bars. After the party there are 39 bars left. How many bars were eaten at the party.
There were 33 bars eaten at the party.
Danny solves 5x20 by thinking about 10x10. Explain his strategy.
Danny breaks about the 20 into 2x10. Now the equation is 5x(2x10). If he moves the parenthesis it becomes (5x2)x10, which is the same as 10x10. They both equal 100.