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Simplify a Single Surd
Like Surds
Multiply These
Nothing About Surds
100
√8
2√2
100
4√5 + 2√5
6√5
100
√3 x √5
√15
100
What gets wet as it dries?
A towel
200
√108
6√3
200

4√7 + 3√7 - 5√7

2√7

200
3√2 x 5√2
30
200

Where do fish keep their money?

In the river bank

300

2√27

6√3

300
4√6 + √24
6√6
300
(√8 +√3) (√8 - √3)
5
300

The number of blind mice multiplied by the number of little pigs multiplied by the number of dwarves.

63

400

√20

2√5

400

√200 - √288

-2√2

400

6√3 (√3 - 7√2)

18 - 42√6

400

 I am an odd number; take away an alphabet and I become even. What number am I?

Seven
500

√80

4√5

500

3√45 - 4√20

√5

500

(√5 - √6)2

11 - 2√30

500

What is the maximum possible number of times you can subtract number 5 from number 25?

Only once. After that, you'd be subtracting the number 5 from 20.