32 rounds to 30, 198 rounds to 200, 200 + 30 = 230
100
Solve the equation 50 - c = 35
c = 15
100
True or False.
You line up the place values when multiplying decimals.
False
200
What is the value of 3,000 x 70 ?
3 x 7 = 21
annex 4 zeroes back on...
210,000
200
Each math book weighs 2.4 pounds. How much do 6 math books weigh?
2.4 x 6 = 14.4 pounds
200
Estimate the product of 7 x 8.9
8.9 rounds to 9, 9 x 7 = 63
200
Solve for the unknown.
2x = 40
x = 20
200
27 divided by 9 = ?
3
300
Mutliply 42 x 89
3,738
300
Carson needs 8.3 feet of wood. If each foot costs $1.25, how much will he spend?
$1.25 x 8.3 = $10.375
so, $10.38
300
Estimate the product of 21.8 x 9.38
21.8 rounds to 22, 9.38 rounds to 9, 22 x 9 = 198
300
Evaluate the expressions 32.84 - w when w = 8
32.84 - 8 = 24.84
300
64 divided by 8 = ?
8
400
Multiply 274 x 58
15,892
400
A bag of chips costs $1.74. A box of cookies costs $2.92. Is it cheaper to buy 3 boxes of cookies or 5 bags of chips?
3 x $2.92 = $8.76, 5 x $1.74 = $8.70
So, it's cheaper to buy 5 bags of chips.
400
The product of two numbers is about $35. One factor is 5. Which is the best choice for the other factor? A. $6.02 B. $6.38 C. $6.98 D. $7.12?
C. $6.98 because it is closest to $7 and $7 x 5 = $35
400
Erin earns $15 for each A she gets on her report card. Write an expression to represent how much money Erin earns if she gets m As on her report card.
15m
400
To find the number of decimal places in your quotient, you count the number of decimal places in your factors.
False.
500
Jalen walks 729 feet to school each day. How many feet has she walked if she's walked to school for 28 days?
729 x 28 = 20,412
500
A bottle of soda costs $0.89. A bottle of juice costs $1.29. Is it cheaper to buy 11 bottles of soda or 7 bottles of juice?
11 x $0.89 = $9.79, 7 x $1.29 = $9.03
So it is cheaper to buy 7 bottles of juice.
500
The product of two numbers is about $64. One factor is 8. What is the best choice for the other factor? A. $8.09 B. $7.88 C. $8.04 D. $7.99
D. $7.99 because it is closest to $8, and $8 x 8 = 64
500
Write an expression that represents the total time Alexis spent on practicing her multiplication facts if she practiced 17 minutes in school and m minutes at home.