Demo. An invented family, made-up minutes, nobody's real child. The quizzes work: pass a round and watch the clock change.

See it asPiperYear 10 RangiYear 7 NovaYear 3 📚 Learning by year

📐 Maths, Years 9 and 10

Years 9 to 10 · Read up first

10 questions. Get 8 right to earn 10 minutes. All 10 right = +5 bonus. They start easy and get harder as you go, so treat the first few as a warm-up. Every one you miss comes back with the answer and why.

1. In the equation y = 2x + 5, what is the gradient?

0.5257

2. Which equation correctly states Pythagoras' rule for a right-angled triangle with hypotenuse c and other sides a and b?

a + b = ca^2 + b^2 = c^2a^2 - b^2 = c^2a^2 x b^2 = c^2

3. Expand: 4(2x + 3)

8x + 128x + 38x + 76x + 7

4. What does the gradient of a straight-line graph measure?

The area under the lineHow steep the line isWhere the line crosses the y-axisHow long the line is

5. Solve: x + 7 = 12

x = 5x = 19x = 7x = -5

6. In a right-angled triangle, which ratio is sin(angle)?

Opposite over hypotenuseOpposite over adjacentHypotenuse over oppositeAdjacent over hypotenuse

7. Simplify: x^3 x x^2

x^5x^6x^12x^5

8. A scatter graph shows points that rise from bottom left to top right. What kind of correlation is this?

Perfect correlationNo correlationNegative correlationPositive correlation

9. Which of these is written correctly in standard form?

71 x 10^47.1 x 5^107.1 x 10^50.71 x 10^6

10. Expand: (x - 3)(x + 5)

x^2 - 2x - 15x^2 + 8x - 15x^2 + 2x - 15x^2 + 2x + 15

← back