Math 9

Equations

100

3x+4=19

5

200

3(x−4) = 21

11

300

-x/4+3 = 7

-16

400

5x−8 = 2x+10

6

500

4(x−2) = 2(x+6)

10

Number sense

100

Simplify:
−6+14−9

-1

200

Evaluate:
2³+4²

24

300

A jacket costs $80 and is discounted by 25%.
What is the sale price?

$60

400

A recipe uses 3/4 cup of sugar for one batch. How much sugar is needed for 3 batches?

2.25 cups

500

The product of two integers is −36.
Give two different possible pairs of integers.

-6 and 6

-4 and 9

Puzzle

100

🍎 = 4

Final picture:
🍎 × 🍎 + 🍎 = ?

20

200

🍎 + 🍎 + 🍎 = 30
🍎 + 🍌 + 🍌 = 18

Final image shows:
🍎 + 🍌 × 🍎 = ?

50

300

A teacher is 3 times as old as a student. In 10 years, the teacher will be twice as old as the student.How old is the student now?

10 years

400

Two students can complete a project together in 6 hours. One student alone can complete it in 10 hours. How long would the other student take alone?

15 hours

500

🐶 + 🐶 + 🐶 = 21
🐶 + 🐱 = 11

Final image shows:
🐶 × 🐱 − 🐶 = ?

21

Math trivia

100

What number is considered unlucky in many Western cultures?

13

200

A standard die (dice) always has opposite sides that add up to what number?

7

300

Roman numerals contain no symbol for which important number?

zero

400

Why is the number 12 used so often (eggs in a dozen, months in a year)?

Because it has many factors and is easy to divide evenly

500

How many degrees are in the interior angles of a triangle combined?

180°

Random

100

What does the study of Histology explore?

Tissues and cells

200

What shape are honeycomb cells?

Hexagonal

300

What is the technical term for a “hashtag” symbol (#)?

Pound sign

400

What has a neck but no head, two arms but no hands?

A shirt

500

what is the unit of electrical resistance?

ohm Ω