Jupiter and Mars Moon Problems

The video tutorial addresses a math problem involving the moons of Jupiter and Mars. It begins by stating that Jupiter has eight times as many moons as Mars, with a combined total of 18 moons. The teacher conducts two trials to solve the problem. In the first trial, Mars is assumed to have one moon, but the total does not match 18. In the second trial, Mars is assumed to have two moons, leading to the correct solution: Jupiter has 16 moons, and Mars has two moons.

If Jupiter has eight times as many moons as Mars, and together they have 18 moons, how many moons does Mars have?

• 4

• 3

• 2

• 1

Tags

CCSS.5.OA.B.3

In the first trial, if Mars has one moon, how many moons does Jupiter have?

• 7

• 8

• 9

• 10

Why was the first trial incorrect?

• Because the ratio was not 8:1

• Because Jupiter had too few moons

• Because Mars had too many moons

• Because the sum of moons was not 18

Tags

CCSS.4.OA.C.5

In the second trial, if Mars has two moons, how many moons does Jupiter have?

• 17

• 14

• 16

• 15

What is the correct number of moons for Jupiter and Mars combined?

• 22

• 20

• 18

• 16