Multiplication and Division
Percent
Problem Solving and Estimation
100
Multiply: 0.14 x 1.6
a) 2.240 b) 0.224
c) 0.0224 d) 0.00224
Answer: b
100
Find 80% of 45.
Answer: 36
100
Gina has 48. She spent 1/4 of the money on a DVD and 3/8 of the money on a sweatshirt. How many dollars did she spend?
Answer: $30
200
Divide: 3 and 1/2 ÷ 1/3.
Answer: 10 and 1/2
200
A pair of running shoes is on sale for 25% off the original price.
Which price is closest to the sale price of the running shoes?
a) $93 b) $99 c) $124 d) $14
Answer: a
200
Bailey feeds dogs for the Humane Society. Each dog gets 1/4 pound of food per day. How many dogs can Bailey feed with 5 and 2/3 pounds of food?
a) 23 dogs b) 22 dogs
c) 21 dogs d) 20 dogs
Answer: b.
300
The highest mountain on the moon is Mount Huygens. It is 5.5 about kilometers in height. Mount Everest, the highest mountain on earth, is about 8.8 kilometers in height. How many times taller Mount Everest than Mount Huygens?
a. 4.84 times b. 3.3 times
c. 1.6 times d. 0.625 times
Answer: c
300
You went to the mall with $ 80 spent $52. What percent was not spent?
Answer: 35%
300
Billy plans to give each of his 28 classmates 7 balloons for an end of the year water balloon fight. He needs 7 for himself too. A bag of balloons contain 40 balloons. How many bags must Billy buy?
6 bags (need 203 balloons)
400
Andy wants to buy 3 and 1/3 cups of cashews. There are 5/6 cup of cashews in each package. How many packages of cashews should Francis buy?
Answer: 4 packages
400
Ashley plans to purchase an item that costs $20 before tax is added. Minnesota's tax rate is 6.5%. What will Ashley's total cost for the item be, including sales tax?
Ashley's total cost will be $21.30.
400
Target Field holds 39,504 people for a Twins game. If 1 out of 8 people buy a hot dog, about how many people buy a hot dog- estimate or round to the nearest thousand.
5,000
500
Describe and correct the error in the solution. Explain your reasoning.
The decimal point is in the wrong place. I estimated the product to be 20 (5 x 4). Since each factor has 1 decimal place, the product will have 2 decimal places. The correct answer is 18.62.
500
Brigette's ice cream cone contains 16 grams of saturated fat. This is 80% of her total daily allowance. What is Brigette's total daily allowance of saturated fat in grams?
Sample Answer: 20 grams
500
Listed are three daily totals of visitors to the Minnesota State Fair.
Monday 173,054 Tuesday 189,905 Wednesday 201,232
Estimating to the nearest thousand, how many people attended the fair on those days?
564,000