Revision year 9!

Life

100

Oslo is the capital of which country

Norway

200

Which element has the chemical symbol Br?

Bromine

300

What is the largest desert on Earth?

Antartica

400

Which bird can fly backwards?

The hummingbird.

500

Which country has won the most FIFA Men’s World Cup titles?

Brazil, 5 FIFA World Cup titles 

Powers of ten and estimation

100

Calculate 10⁴.

10000 or ten thousand

200

Write 0.0000001 as a power of 10.

10^-7

300

Estimate (3.6×10⁵)(5.1×10⁻³)

2×10³

400

Estimate (9.2×10⁷) / (3.1×10^-4 ) 

3x10¹¹

500

Estimate (6.4×10⁸)(2.7×10⁻⁵) / (3.2×10²)

6 x 10^-1

Rules of powers

100

Simplify x⁴ × x³

x⁷

200

Simplify a⁹ / a⁴

a⁵

300

Simplify (m³)⁴ 

m¹²

400

Simplify 6p⁷q³ / 2p²q

3 p⁵q²

500

Simplify (4x³y⁻²)²/ 2xy⁻¹

2x⁵y^-3

Calculations with negative numbers

100

Calculate −8+13

5

200

Calculate (−7)(−6).

42

300

Calculate 15−(−9)+(−12).

12

400

Calculate (−4)²−3(−5).

31

500

(−18/3)−(−2)³+4(−3).  

-10

Standard form and calculations

100

Write 450000 in standard form.

4.5x10⁵

200

Write 0.00072 in standard form.

7.2x10^-4

300

Calculate (3×10⁴)(2×10³). Give your answer in standard form.

6x10⁷

400

Calculate (8.4×10⁷) / (2.1×10³). Give your answer in standard form.

4x10⁴

500

Calculate (5.2×10⁶)+(8.08×10⁵). Give your answer in standard form.

6.08x10⁶