Class 6 maths · E.7 · Expressions
Evaluate expressions with two variables
Replace each letter with its value, then work in the usual order.
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Evaluate ab when a = 3 and b = 1.
Answer: 3
Evaluate ab when a = 4 and b = 4.
Answer: 16
Evaluate ab when a = 3 and b = 5.
Answer: 15
Tip: Replace each letter with its value, then work in the usual order.
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