10 questions🇬🇧English
🌿 Surds – GCSE
Maths · GCSE — simplifying, multiplying and expanding surds and rationalising the denominator
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Questions
Write √50 in its simplest surd form:
25√2
5√2
2√5
10√5
20s
What is √3 × √12?
6
√15
4√3
12
20s
Simplify 3√5 + 4√5:
12√25
7√10
12√5
7√5
20s
What is √48 ÷ √3?
16
4√3
4
2√3
20s
Simplify √12 + √27:
5√6
√39
5√3
6√3
30s
Simplify 2√3 × 5√6:
30√3
30√2
10√3
7√18
30s
Rationalise the denominator of 6/√3:
3√3
2√3
6√3
√2
30s
Expand and simplify (3 + √2)²:
11 + 3√2
11 + 6√2
9 + 6√2
11
30s
Rationalise the denominator of 1/(3 + √2):
(3 + √2)/7
(3 − √2)/5
(3 − √2)/7
(3 − √2)/11
60s
Rationalise the denominator and simplify 4/(√5 − 1):
4√5 + 4
√5 + 1
√5 − 1
(√5 + 1)/6
60s