G6/G7 Maths jeopardy challenge

Number Ninjas

100

Is 4,572 divisible by 3?

Answer: Yes
Reason: 4 + 5 + 7 + 2 = 18, and 18 is divisible by 3.

200

Plastic forks come in packages of 12 and plastic spoons come in packages of 8. If you want one fork for each spoon at a party with none leftover, what is the least amount of forks and spoons that you need to buy?  

Find the LCM of 12 and 8, which is 24.

So you need:

• 24 forks (2 packs of 12)

• 24 spoons (3 packs of 8)

Least amount: 24 forks and 24 spoons

300

Max's goal is to practice playing drums for 300 minutes this week.        On Sunday he practiced for 127 minutes. On Tuesday he practiced for 38 minutes.    How many more minutes does Max need to practice in order to meet his goal?

135 minutes

400

Without full division, determine whether 54,936 is divisible by 6, 8, and 9.

• 6: even and digit sum = 27 

• 8: last three digits 936 ÷ 8 = 117

• 9: digit sum 27

• Divisible by all three

500

The greatest common factor of 10, 50, and 100.

10

Fraction Fighters

100

There are 3 cats and 9 dogs. Find the ratio of cats to dogs?

1/3

200

There are 20 students in a class that has 12 boys. Write a ratio to compare the number of girls to boys.

2/3

300

Tyler ran 2/3 of a mile. Malik ran 3 times as far. How far did Malik run? 

2 miles

400

The number on the bottom of a fraction is called what?

denominator

500

Charlotte bought 16 songs.  3/4 of the songs are pop songs.  How many songs are pop songs?

12 songs

Patterns & Rules

100

The rule for the pattern 5, 7, 9, 11 is ..

+2

200

Find the missing numbers in the pattern. 63, 54, ......, 36,27

45

300

Rule for 1, 4, 9, 16, 25 .....

n²

400

Rule 3n − 2, find 6th term

16

500

Rule n² − n
Find 5^th term

20

Shapes & Space

100

A polygon has 5 sides. What is it called?

Pentagon

200

How many edges does a cube have?

12

300

A rectangle and a square have the same perimeter of 32 cm.
Which shape has the greater area, and why?

SQUARE

400

Which has more diagonals: a pentagon or a hexagon?

Hexagon

500

What is the difference between a radius and a diameter of a circle?

d = 2 r

Just for fun

100

Is 2 kg of 10-cent coins heavier, or 1 kg of 20-cent coins?

2 kg of 10-cent coins is heavier.

Because 2 kg is heavier than 1 kg, no matter what the coins are.

200

When it rains, what kind of tree do birds land on?

A wet tree

300

Which hand is it easier to stir coffee with sugar?

The hand holding a spoon

400

Can an ostrich say, ‘I belong to birds’?

No, because it can’t talk.

500

There are 10 candles on a cake. If you blow out 4 of them, how many are left?

10 will be left — 4 are blown out, 6 are still burning.