🦘 Math Kangaroo Grade All Felix 1-2 Ecolier 3-4 Benjamin 5-6 Kadett 7-8 Junior 9-10 Student 11-12 ⇄ switch contest
2017 Math Kangaroo

Problem 2

Problem 2 · 2017 Math Kangaroo Easy
Fractions, Decimals & Percents fraction-to-decimal

If John looks out the window he can see half of the kangaroos in the park. How many kangaroos in total are there in the park?

Figure for Math Kangaroo 2017 Problem 2
Show answer
Answer: D — 12
Show hints
Hint 1 of 2
The kangaroos you can see through the window are only one part of all of them.
Still stuck? Show hint 2 →
Hint 2 of 2
If what you see is half, then the rest behind the wall is the other half, just as many.
Show solution
Approach: seen amount is half, so double it
  1. John sees 6 kangaroos.
  2. These are half of all the kangaroos in the park.
  3. So the total is 6 x 2 = 12.
Mark: · log in to save