Variables and Expressions
Simplifying Expressions
Distributive Property
Orders of Operations
Random
100
Is this an expression or equation? (表达式还是方程?)
5(2n + 6)
an expression
100
+300 points
Combine like terms.
2a + 7 + 5a
9a + 7
100
Use distributive property to simplify.
7(2x + 5) − 3x
11x + 35
100
-200 points
Evaluate.
40 - 10 ÷ 5 ∙ 6
28
100
Solve for m.
-4m + 93 = -15
m = 27
200
Evaluate the expression 14 + n ∙ 8 when n = 13.
118
200
DOUBLE POINTS X2
Combine like terms.
4a + 3b − 7a + 6b − 2
-3a + 9b - 2
200
Use distributive property to simplify.
4(-3x - 9x + 5)
−48x + 20
200
Solve by using orders of operations.
42
200
Bonus 3x
The answer of a multiplication problem is called a _______.
Product.
300
Solve. -9jm - m2 + 6jm , when j = 6 and m = 7.
-175
300
8y2 and 4y are _______ _______ .
unlike terms.
300
TRIPLE POINTS X 2
John and Sara have $569 saved up together. They both make $32 per hour. John works 5 hours and Sara works 6 hours. How much do they have in total?
$921
300
Solve.
54
300
Tim makes $8.50 per hour. If he works 13 hours and spends half of the money on clothes, how much will he have left?
$55.25
400
In the expression 8n + 3 , the 8 is called the __________.
coefficient
400
Combine like terms.
6m − 4(2m − 3) + 5
-2m + 17
400
Use distributive property to simplify.
8n2(2n + 8)
16n3 + 64n2
400
Solve using orders of operations.
9 + 32 x 10 ÷ 2 = ?
54
400
16 friends went to a restaurant and the bill came to $677.60. How much does each person spend.
$42.35
500
DOUBLE POINTS X2
Solve this equation.
5(2x − 4) + 3 = 3(3x + 1) − (x − 6)
x = 13
500
Combine like terms.
3x + 5y − (2x − 3y + 4) + 6x − (y − 2x −5)
9x + 7y + 1
500
Chad has $825. He buys 4 adult movie tickets for $68 each. He buys 9 child tickets for $53 each. How much money does he have left after?
$76
500
Solve.
-2
500
A car worker charges 594.80 for full service. If he charges $74.35 per hour, how many hours did he work?
8