Maths Riddles

Numbers

Sequence

Maths Symbols

BDSC Maths

100

What 3 positive numbers give the same answer when multiplied and added together?

1,2,3

100

Bob baked 100 biscuits. He became bored with decorating biscuits so he decided to vary the decoration. He tops every third busting with a nut, ices every fourth, and puts a cherry on every fifth. When he has finished all 100, what is the number of the biscuit that has all three decorations?

60

100

2, 6, 12, 20, ___?

30

100

What branch of math commonly uses letters or other symbols to represent unknown numbers?

algebra

100

True or False, English and Maths are compulsory until year 12

False (English is compulsory in year 12)

200

What number do you get when you multiply all of the numbers on a telephone keypad?

0

200

I am a number that is divisible by both 3 and 4, and my digits add up to 9. What number am I?

36

200

29, 36, 43, 50 _?

57

200

Finish the sentence: Cos, Sine and

Tan

200

True or False, BDSC has the most Maths teachers compared to other subjects

False

300

Each time a bouncy ball bounces, it bounces to half the height from which it falls. If Jack drops a ball from a building and it rises to a height of 24 meters, how high will it be on the fifth bounce?

1.5 meters

300

Brian is twice as old as Charlie. Three years from now the sum of their ages will be 33. How old is Charlie?

8

300

0, 1, 1, 2, 3, 5, 8 ___?

13

300

What this symbol mean?

"≥"

greater than or equal to

300

Which whanau leader in BDSC also teaches Maths?

Ms Beazley

400

A wild dog swallowed a total of 105 nuts in five days. Each day he managed to eat eight more than he had on the previous day. How many nuts did he eat on the last day.

37

400

A father is twice as old as his son. Four years ago, the father was three times as old as his son. How old are they now?

The son is 8 years old, and the father is 16 years old.

400

1, 3, 2, 4, 3, 5, 4, ___?

6

400

What is another branch of math (not algebra) that may use math symbols? (Hint: they use symbols in their formulas/rules)

Geometry/angles

400

Name one Maths teacher from Spirit

Mr Gamiao/Mrs Hu/Mrs Speed

500

Two fathers and two sons go fishing. Each catches one fish, but there are only three fish caught. How is this possible?

The three people are a grandfather, his son (the father), and his grandson.

500

James is one third the age of his father, Steve. The two have a combined age of 68. How old is Steve?

51

500

1, 1, 2, 6, 24, ___?

120

5!

500

What is the 10th decimal digit of Pi?

5

500

How many maths staff are there in BDSC?

A. 14, B. 15, C. 16, D. 17

D. 17