3.NBT.3 Multiplying by Multiples of 10

In the year 3020, a robot multiplies 20 energy units by 7. How many energy units does the robot have now?

• 120 energy units

• 140 energy units

• 160 energy units

• 210 energy units

In the year 3000, a robot multiplies 40 energy units by 7. How many energy units does the robot have now?

• 210

• 240

• 280

• 350

In the year 3000, a robot named Kesha needs to calculate the energy required to travel a distance. The energy required is calculated by the formula 5 X 60 joules. What is the BEST explanation for how Kesha can calculate the energy required?

• Calculate 5×6 first. Then add 2 zeroes to the answer, so 5 × 60 = 300 joules.

• Calculate 5×6 first. Then add 3 zeroes to the answer, so 5 × 60 = 30,000 joules.

• Calculate 5x6 first. That has a zero in the answer, so 5 × 60 = 30 joules.

• Calculate 5x6 first. Then add another zero to the answer, so 5 × 60 = 300 joules.

In the year 3000, an android named Tage operates 7 days a week. After 60 weeks, he claims that he has been operational for 4,200 days. Is Tage's calculation correct? Why or why not?

• Tage's calculation is not correct because there should be only one zero when he multiplies by a multiple of ten.

• Tage's calculation is correct because 7 x6 = 42, and then he needs to add two zeros when he multiplies by a multiple of one hundred.

• Tage's calculation is not correct because 7× 6 = 49, and then he needs to add a zero when he multiplies by a multiple of ten.

• Tage's calculation is correct because there should be two zeros when he multiplies by a multiple of ten.

Vincent has 4 shelves in his closet. He folds all of his shirts and places them on the shelves. He puts 10 folded shirts on each shelf. How many shirts does Vincent have? Type your answer in the box below.

Tags

CCSS.3.OA.A.3

In the year 3000, a spaceship travels at a speed of 30 light years per hour. How far would it travel in 7 hours?

• 210 light years

• 280 light years

• 28 light years

• 21 light years

There are 6 data servers in a futuristic data center with 20 terabytes of data on each server. How much data is there in all?

• 26 terabytes

• 180 terabytes

• 120 terabytes

• 80 terabytes

In the year 3000, Eddie is the commander of a fleet of 70 space rovers. Each rover is equipped with 6 wheels for planetary exploration. How many wheels are there in Eddie's entire fleet?

• 480

• 420

• 706

• 280

The image below displays a cluster of 10 energy rods. How many energy rods are in 8 of these clusters?

• 8

• 80

• 88

• 800

Tags

CCSS.1.NBT.B.2B

CCSS.1.NBT.B.2C

In the year 3000, a robot needs to multiply
50 energy units by 3. How many energy units will the robot have?

• 15

• 80

• 150

• 1500