Substituting particular values

12 questions

1. Calculate (-5)^2
2. Select the correct first step to evaluate 2+3\times 5^2
3. Evaluate {12\times 2\over 4}-2
4. Starting with the first step, put these lines of working in order to show how to evaluate {25+2\times (2+1)^2\over 10}-4
5. In the equation 2a+1=5-3a, 5-3a is called an ___.
6. Match up the directed number calculation with the correct value.
7. To evaluate an expression for a given value of its variable we can ___ the value in place of the variable
8. Match up the expressions with their value when r=7
9. For what value of y does 3y have the same value as y+6? y=___
10. For which values of y is y^2-3 smaller than y?
11. For the values of a, b and c shown evaluate the expression 2ab-c
12. For the values of a, b and c shown evaluate the expression (2a)^2-bc

License: OGL