SBTN

Substitution (Level 1)

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Here are some mathematical expressions.
Can you evaluate them if s = 2, b = 3, t = 2 and n = 6

ExpressionWorkingAnswer
t + 2
s + b
b + n
t - s
t + b + s
t + n - 1
20 - b
n + 17 - b
50 - s - b - t
n - b + t - s + 7

 

Instructions

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Description of Levels

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Level 1 - Simple addition - positive integers

Level 2 - Addition and multiplication - positive integers

Level 3 - Squaring - positive integers

Level 4 - Brackets - positive integers

Level 5 - Mixed expressions - positive integers

Level 6 - Simple addition - negative integers

Level 7 - Addition and multiplication - negative integers

Level 8 - Squaring - negative integers

Level 9 - Brackets - negative integers

Level 10 - Mixed expressions - negative integers

Level 11 - Simple addition - positive and negative decimals

Level 12 - Addition and multiplication - positive and negative decimals

Level 13 - Squaring - positive and negative decimals

Level 14 - Brackets - positive and negative decimals

Level 15 - Mixed expressions - positive and negative decimals

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