IGCSE Maths Edexcel A 4MA1

1.9: Standard form

#1.9A

calculate with and interpret numbers in the form $a × 10^n$ where $n$ is an integer and $1 \leq a < 10$

$150,000,000 = 1.5 × 10^8$

#1.9B

solve problems involving standard form

1.8

Degree of accuracy

1.10

Applying number