Multiply and Divide
If 26x7= 182, find
26x70
260x700
2,600x7
26x70=1,820
260x700=182,000
2,600x7=18,200
Choose the number that is closest to the value of 4,263÷87.
A) 50,000 C) 500
B) 5,000 D) 50
Be ready to explain your reasoning.
D) 50
The area of someone's living room is 448 square feet. If the length of the room is 28 feet, what is the width?
Show your work on your slate and be ready to explain your thinking.
16 feet
If 2,537÷59=43, which of the following are true? Select all correct answers:
A) 25,370÷59=430 C) 2,537÷590=43
B) 253,700÷590=430 D) 25,370÷590=43
Be ready to explain your reasoning.
A) 25,370÷59=430
B) 253,700÷590=430 D) 25,370÷590=43
In one hour, 1,920 people can go on a roller coaster at Six Flags. At that rate, about how many people ride the roller coaster in 13 hours?
Be ready to explain your estimation strategy.
Estimates may vary.
2,000 x 13= 26,000 people
2,000 x 10=20,000 people
The base of a terrarium is 240 square inches. The height is 9 inches.
If the terrarium is 20 inches long, how wide is it?
Be ready to explain your thinking.
Width=12 inches
A=LxW
12x20=240 or 240÷20=12
The height is not needed to solve this problem.
The equation 35x42=1,470 is true. Select all true equations:
A) 42x35=1,470 C) 1,470÷35=42
B) 35 ÷ 1,470=42 D) 42 x 1,470=35
Be ready to tell why you chose your answers.
A) 42x35=1,470
C) 1,470÷35=42
The base of a terrarium is 240 square inches. The height is 9 inches.
How do you know the volume must be less than 3,000 cubic inches?
I can estimate the volume: V=Bxh.
If I round 9 inches to 10 to make the calculation easier:
240x10= 2,400. I overestimated, and the volume is still less than 3,000 cubic inches. The actual volume would be even less, since 9<10.
582 x 39
Show all steps of your work on your slate.
22,698
The base of a terrarium is 240 square inches. The height is 9 inches.
Find the volume of the terrarium.
V=Bxh
240x9=2,160 cubic inches
1,872÷26
Show all steps of your work on your slate.
72
The volume of a small jewelry box is 720 cubic cm. If the length is 15 cm and the height is 6 cm, what is the width of the jewelry box?
Be ready to explain your strategy.
V=LxWxH
720=15xWx6
720÷15÷6=8 cm or
720÷ (15x6)= 720÷90=8 cm