EOY Maths

Question 1

5 ^ -1

Answer 1

1/5

Question 2

5^3

Answer 2

5x5x5 =125

Question 3

5^-3

Answer 3

1/5^3 or 1/125

Question 5

What is standard form?

Answer 5

A x 10^n

Question 6

0.0003 in standard form?

Answer 6

3 x 10 ^ -4

Question 7

690000 in standard form?

Answer 7

6.9 x 10 ^ 5

Question 8

Write 8^5 in the form of 2^n

Answer 8

8 = 2^3
8^5 = (2^3)^5
8^5 = 2^15

Question 9

Estimate the square root of 38

Answer 9

[Sguigly equals sign] square root of 36 = six

Question 10

Make x the subject
3x = ax + b

Answer 10

3x = ax + b
3x - ax = b - ax
x(3 - a) = b factorise
x = b/3 - a. /3

Question 11

Make x the subject
px + q = x +5

Answer 11

px +q =5 +x
px + q - x = 5 - x
px - x = 5 - q - q
x(p-1) = 5 - q. /x
x = 5 - q / p - 1