Intro to Exponents
Evaluate the expression below.
53
125
[(18-6)+4times4]/7
4
Evaluate the expression if j = 3.
2j2 - 9
9
On a quiz show, the contestant who gets the answer correct in the shortest amount of time wins. The host asks for the solution to 49 + 83 + 51. Contestant number one quickly found the sum of 49 + 51 to be 100, then added 83 to get 183. Which property did the contestant use?
commutative property of addition
Use properties of operations to create an equivalent expression.
8(4x + 9)
32x + 72
Evaluate the expression below.
151
15
(122 - 20) - 18
106
Evaluate the expression if k = 6 and m = 12.
8(m - k) + 5
53
Jamie was struggling to multiply two-digit numbers together. Mrs. Brack helped her with the problem
(13times20)times5
by multiplying 20 by 5 and then by 13, which is 1,300. What property did Mrs. Brack use?
associative property of multiplication
Use properties of operations to create an equivalent expression.
3(5x + 2)
15x + 6
Evaluate the expression below.
34
81
15^2-(3times5) + 7
217
Evaluate the expression if j = 3, k = 6, and m = 12.
(jk+4m)/2
33
Property: Commutative Property of Addition
Problem: 7.5 + s
Use The Property: __________
s + 7.5
Use properties of operations to create an equivalent expression.
2(8x + 10)
16x + 20
Evaluate the expression below.
63
216
Which operation is performed in the second step of the problem below?
7times6-(18+3^2)
addition
Evaluate the expression if k = 6 and m = 12.
4(m2 - k) - 18
534
Property: Additive Identity Property
Problem: k + 0
Use The Property: __________
k
Use properties of operations to create an equivalent expression.
15-(xtimes9)
Hint: Use the commutative property of multiplication.
15-(9timesx)
Evaluate the expression below.
142
196
Which operation is performed in the second step of the problem below?
(7^2-9)/8
subtraction
Find the perimeter of a rectangle with a length of 3.5 meters and a width of 8 meters. (P = 2l + 2w)
23 m
Property: Multiplicative Identity Property
Problem:
btimes1
Use The Property: __________
Use properties of operations to create and equivalent expression.
16times11times8
Hint: Use the commutative property of multiplication.
16times8times11