Rounding
Round 56 to the nearest 10.
60
Both 3 x 2 = 6 and 2 x 3 = 6. This is an example of which property of multiplication?
The order of the factors does not change the product, so it is the Commutative Property.
3 x ___ = 12
4
On their latest meeting, two students found out that Tom has twice as many animal robots than Michael. If Michael has 8 animal robots, how many animal robots does Tom have?
16
You have 30 seconds to solve this multiplication problem:
2 x 0 =
0
Round 142 to the nearest 10.
140
What property of multiplication is described by the following equation:
(2 x 3) x 5 = 2 x (3 x 5)
Changing the grouping of factors does not change the product so it is the Associative Property.
_____ x 2 = 12
6
Tom saw that Michael has a rare robot that would complete one of his robot sets. Michael offered to sell it but he said that Tom will need to pay 3 times the original price. If the rare robot has an original price of $3, how much should Tom pay?
$9
You have 30 seconds to solve the following multiplication problem:
3 x 5=
15
Round 389 to the nearest 100.
400
What property does this equation represent?
7 x 1= 7
The product of 1 and any number is that number, so it is the Identity Property.
7 x ______ = 21
3
Before they end the meeting, Tom counted the total number of robots in his collection. He has 6 sets of robots and each set is composed of 7 robots. What is the equation for how many robots Tom has in his collection?
6 x 7= 42
You have 30 seconds to solve the following multiplication problem:
4 x 6 =
24
Round 122 to the nearest 100.
100
What property does this equation show?
4×3=3×4
Commutative Property
9 x _______ = 45
5
Michael has 4 times more flying robots than Tom. The robots can fly 12 feet before they crash! If Tom has 3 flying robots, how many flying robots does Michael have?
12
You have 30 seconds to solve the following multiplication problem:
8 x 7=
56
Round 25 to the nearest 10.
30
What property does this equation show?
10 x 1= 10
Identity Property
3 x _________ = 36
12
Tom and Michael talked about Bob who has a huge collection of car robots. If Tom and Michael have 9 car robots and Bob has 9 times more than that, how many car robots does Bob have?
81
You have 30 seconds to solve the following multiplication problem:
10 x 10=
100