Estimation
Write a new expression where both factors in 37 x 88 are rounded.
40 x 90
What is 172 x 14?
2,408
A cookie has 115 calories. Last week, Mia and Max ate a total of 14 cookies. How many calories did they eat?
1,610 calories
Solve 815 x 100 = ?
81,500
Estimate the product of 296 x 7.
2,100 or 3,000
What is 327 x 91?
29, 757
A book store sells novels for $34 each. On Saturday, the store sold 137 novels. What was the total amount in dollar sales that the book store made on Saturday?
$4,658
What is 14 x 104?
140,000
Estimate the product of 515 x 8
4,000 or 5,000
What is 604 x 55?
33,220
Mason ordered 1,127 toys. Amy ordered 7 times as many toys as Mason. Write and solve an equation to find the number of toys (t) Amy ordered.
1,127 x 7 = t
t = 7,889
Find the product of 906 x 54
48,924
A local store received a 147 truck delivery with 68 packages on each truck.
Estimate the total number of packages on the trucks by using an equation to model your work.
150 x 70 = 10,500
What are the partial products for the equation 406 x 53= ?
1,218 and 20,300
Alex has a collection of 347 baseball cards. A store had 15 times as much but sold 613 of them. How many baseball cards does the store have now?
4,592
Omar bought an art kit for $14 and an easel for 4 times as much. Write and solve an equation to show how much the easel costs.
14 x 4 = $56
Mike plays games for about 178 hours per month. Which expression would be the best estimate of the number of hours he plays games in a year? How many hours does he actually play in a year?
Expression : 180 x 12
Answer: 2,136 hours in a year
Find the product of 372 x 42 and write a new equation using compatible numbers to check if your answer is reasonable.
15,624
400 x 40 = 16,000
Sara saved $3,245 last year. Jessica saved 8 times as much but then bought a car for $17, 865. How much money does Jessica still have?
$8,095
Maggie bakes 16 trays of muffins for the school bake sale. Each tray hold 8 blueberry muffins, 8 chocolate chip muffins, and 8 corn muffins. What is the total number of muffins Maggie bakes for the bake sale?
If they are sold for $2 each how much money would she make from selling the muffins?
384 muffins
$768