GCSE Revision Tests
GCSE Higher Revision Test 4 (Calc)
Interactive practice questions
A bag contains $86$86 marbles, some of which are black and some of which are white. If the probability of selecting a black marble is $\frac{33}{43}$3343, find:
a
The number of black marbles.
b
The number of white marbles.
Easy
1min
What is the scale of enlargement from triangle ABC into triangle A'B'C'.
Easy
< 1min
We want to find all factors of $30$30 by using a factor tree.
Easy
2min
By expanding into products of factors, find the highest common factor of $216$216 and $144$144.
Easy
5min
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