Changing the subject with simple formula | Maths | Quizalize & Oak National Academy

Starter quiz

Division in the __________ operation of multiplication.
- improper
- inequal
- invariant
- inverse ✓
Select the rearrangements of the additive relationship 389.16 + 417.4 = 806.56.
- 417.4 + 389.16 = 806.56 ✓
- 806.56 + 417.4 = 389.16
- 417.4 − 806.56 = 389.16
- 806.56 − 417.4 = 389.16 ✓
- 417.4 − 389.16 = 806.56
Select the rearrangements of the multiplicative relationship $y=5x$ .
- $5y=x$
- ${5\over{y}}=x$
- ${y\over{5}}=x$ ✓
- ${y\over{x}}=5$ ✓
- ${x\over{y}}=5$
The solution to $x-13=63$ is $x=$ ______.
- '76' ✓
Laura begins to solve the equation $x-12=13$ by writing $x-12+12=13$ . What error has Laura made?
- Laura should add $13$ , not $12$ .
- Laura has only performed the operation $+12$ to one side of the equation. ✓
- The answer is obviously just $1$ . Laura doesn't need a method here.
- Laura should do $-12$ , not $+12$
Which of the below are rearrangements of the equation $17-x=2y$ ?
- $17+2y=x$
- $17=2y+x$ ✓
- $x-17=2y$
- $17-2y=x$ ✓
- $17-2x=y$