Securing understanding of equality | Maths | Quizalize & Oak National Academy

Starter quiz

Aisha is $a$ years old. Which of these is an expression for her age 2 years ago?
- $a + 2$
- $a - 2$ ✓
- $2a$
- $a\over 2$
- $2 - a$
Andeep is thinking of a number, when he adds 2 then multiplies by 5 he gets 27. Which of these equations represents his number?
- $5a + 2 = 27$
- $a = 27 + 2 \times 5$
- $5(a + 2) = 27$ ✓
- ${a-2\over 5}=27$
- $a + 2\times 5 = 27$
Which equations are represented by this bar model?
- $3x = y + 6$ ✓
- $3x + 6 = y$
- $3x + y = 6$
- $6 + y = 3x$ ✓
- $x = 6 + y$
Select the calculation that is equivalent to $8+4\over 4$ .
- $8 + {4\over 4}$
- ${8\over 4} + 4$
- ${8\over 4}+{4\over 4}$ ✓
- $8\times 4 + 4\times 4$
- $8\div (4+4)$
Which expression is represented by this bar model?
- $a + a + 2$
- $6a + 6$ ✓
- $6a + 2$
- $3(a + 2)$
- $3(2a + 2)$ ✓
Match each expressions containing brackets with its expanded form.
- $2(3x - 4)$
  
  ⇔
  
  $6x - 8$ ✓
- $2(4 - 3x)$
  
  ⇔
  
  $-6x + 8$ ✓
- $2(3x - 2)$
  
  ⇔
  
  $6x - 4$ ✓
- $2(2 - 3x)$
  
  ⇔
  
  $-6x + 4$ ✓
- $-2(-3x - 4)$
  
  ⇔
  
  $6x + 8$ ✓
- $-2(4 + 3x)$
  
  ⇔
  
  $-6x - 8$ ✓