Properties
The sum of any number and 0 is that number.
What is the Identity Property of Addition?
24 + (8 - 5) x 3
33
Subtract 48 from 72, then multiply by 5.
(72 - 48) x 5
Solve: 84 x 6
504
There are 20 teachers in the school. Each teacher has 25 students.
20 x 25
Changing the grouping of the factors doesn't change the product.
What is the Associative Property of Multiplication?
[(10 - 8) + (12 - 4)] x 2
20
Multiply 7 and 6, then subtract 5.
(7 x 6) - 5
Solve 3 x 91
273
Joey earned $75 mowing grass this summer. He spent $25 on a new video game and $15 on a new movie. How much did he have left over?
75 - 25 - 15
Changing the order of the addends does not change the sum.
What is the Commutative Property of Addition?
5 x [(7 + 8) - 10]
25
Add the product of 6 and 4 to the product of 3 and 5.
(6 x 4) + (3 x 5)
Solve: 2 x 83
166
On the trip, the Williams family traveled 325 miles on Monday. On Tuesday, they traveled 15 more than they did on Monday. How many miles did they travel in all?
325 + (325 + 15)
Multiplying a sum by a number is the same as multiplying each number in the sum by the number and adding their products.
What is the Distributive Property?
8 x [(20 - 9 ÷ 3 - 9) + 2]
80
Subtract 18 from the quotient of 80 and 2.
(80 ÷ 2) - 18
Solve: 45 x 8
360
Shelly has 24 cupcakes. She decided to eat 2 then share the remaining cupcakes with her 6 friends.
(24 - 2) ÷ 6
The product of any number and 1 is that number.
What is the Identity Property of Multiplication?
4 + {[16 ÷ 8 + (7 - 3)] + 3}
13
Multiply 8 by the difference of 40 and 28.
8 x (40 - 28)
Solve: 37 x 7
259
Write a real-life problem that can be represented by the phrase "10 less than the sum of 16 and 18."
Maria collected 16 seashells on Monday and 18 seashells on Tuesday. She decided to give away 10 of her seashells to her friend.
Maria had $16 in her wallet and earned $18 for babysitting. Then she spent $10 on lunch.
How much money does she have now?
Liam picked 16 apples from one tree and 18 apples from another. He gave 10 apples to his neighbors.
How many apples does he have left?