Algebraic Equations
Substitution
Powers of Ten
Decimal X Whole Number
Estimating
100
Solve and show your work for 6x = 30
What is x = 5
100
If n = 4, what is the value of 8/n?
What is 2
100
What is 0.423x10
What is 4.23
100
9.8 x 2
What is 19.6
100
0.12 x 5
What is 0.5
200
Solve and show your work for x -23 = 50
What is x = 73
200
If M = 12, what is the value of M - 3 x 2 + 7?
What is 13
200
What is 63.7x100
What is 6370.
200
0.457 x 3
What is 1.371
200
45.3 x 4
What is 180
300
Solve and show your work for p + 35 = 91
What is p = 56
300
What is the value of the expression below when T = 8? Show your work to get the credit! 5 + 3T
What is 29
300
What is 0.001x10
What is 0.01
300
45 x 0.003
What is 0.135
300
25 x 0.37
What is 10
400
Solve and show your work for n ÷ 4 = 25
What is n = 100
400
If k = 17, then what is the value of ten less than k?
What is 17 - 10 = 7
400
The Parents' Club is trying to decide on favors for International Night. They will need 100 items, and they have a budget of $250. They can choose from 100 baseball hats at $2.45 each, 100 sports bottles at $2.50 each, or 100 flags at $2.75 each. Which item can they afford to buy?
What is baseball hats or sports bottles.
400
170 x 0.003
What is 0.51
400
If n x 4.16 is about 200, what is a reasonable estimate for n?
What is 50
500
Solve and show your work ufor 3x = 450
What is x = 150
500
If g = 4, then what is the value of g squared plus twenty minus two squared?
What is 32
500
The principal of Mountain Middle School has a big glass jar of marbles. The empty jar weights 40.5 ounces, and each of the 1,000 marbles weights 1.25 ounces. Find the total weight in ounces of the marble.
What is 1,250
500
34,000 x 2.65
What is 90,100
500
Dentalia shells were used by some Native American tribes to make jewelry. Each dentalia shell is 1.25 inches long. If a necklace had been made with 18 dentalia shells, about how long was this necklace? Explain your estimate.
Answers will vary. Sample: Round 1.25 to 1 and 18 to 20 so 20 inches long.
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