Comparative Statements
Write this as a number sentence
4 times as many as 7 is 28.
4 x 7 =28
Estimate the following problem
5 × 2,213
5 x 2,000=10,000
Solve this problem using partial products:
84 x 7
80x7= 560
4 x 7 = 28
Total: 588
A bank teller has 7 rolls of coins. Each roll has 40 coins. How many coins does the bank teller have?
280 rolls
Write as a number sentence
10 is 2 times as many as 5.
10= 2 x 5
6 x 12,457
72,000
Solve using Stacking:
91 x 7
637
Sharon is 54 inches tall. A tree in her backyard is 5 times as tall as she is. The floor of her treehouse is at a height that is twice as tall as she is. What is the difference, in inches, between the top of the tree and the floor of the treehouse?
162 inches
Write this as a comparative statement.
18 = 9 × 2
18 is 9 times as many as 2
3 x 576
What is the upper estimate and the lower estimate?
3 x 500 = 1,500
3 x 600= 1,800
Model the area Diagram:
123 x 5
615
You have three boxes each with a number on top with each partial product inside
Airplane tickets to Fairbanks, Alaska, will cost $958 each. Airplane tickets to Vancouver, Canada, will cost $734. How much can the four members of the Harrison family save on airfare by vacationing in Vancouver?
$896
Write as a comparative sentence
8 × 5 = 40
8 times as many as 5 is 40
The answer to 7 x 1156 will fall between 7,700 and 8,400.
Solve using Stacking:
3,218 x 6
19,308
A seafood company sold 9,125 pounds of fish last month. If 6 seafood companies sold the same amount of fish, how much fish did the 6 companies sell last month in all?
54,750 pounds
Nando has 4 goldfish. Jill has 3 goldfish. Cooper has 2 times as many goldfish as Nando and Jill combined. Write an equation that compares the number of goldfish Cooper has with the number of goldfish that Nando and Jill have.
2 x 7 =14
Isaac drinks 8 glasses of water each day. He says he will drink 2,920 glasses of water in a year that has 365 days. Is the exact answer reasonable? Explain
Yes, because 8 x 300 is 2,400 and 8 x 400 is 3,200 so his estimate is in the range.
Use the distributive property to break apart the problem below.
32 x 8
Lafayette County has a population of 7,022 people. Columbia County’s population is 8 times as great as Lafayette County’s population. What is the population of Columbia County?
56,176 people