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6.02 Substitution into expressions

Interactive practice questions

Evaluate $y+5$y+5 if:

a

$y$y is equal to $3$3

b

$y$y is equal to $6$6

Easy
< 1min

Find the value of $x-2$x2 when $x=8$x=8.

Easy
< 1min

Evaluate $a+b$a+b when $a=5$a=5 and $b=1.1$b=1.1

Easy
< 1min

Find the value of $u+v+25$u+v+25 if $u$u is $32$32 and $v$v is $48$48.

Easy
< 1min
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Outcomes

1.2.2

substitute values for the variables in a mathematical formula in given form to calculate the value of the subject of the formula

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