High School Maths Examples and Questions

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Questions − Substitution into Formulae

1.  What is the value of 7 + 2a when a = 6?

2.  What is the value of 2x + 3 when x = 60?

3.  What is the value of 35 + 4y when y = −5?

4.  What is the value of 10 + 3a + b when a = 4 and b = −7?

5.  What is the value of 2a + 3b + c when a = 2, b= 5 and c = −4?

6.  What is the value of 4 + xy + z when x= −3, y = −7 and z = 6?

7.  What is the value of 9 + 2xyz when x = −6, y = −12, z = −3?

8.  What is the value of 2a + 3bc − 4c when a = −6, b = 7 and c = 8?




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