Multiplying an expression by a constant | Maths | Quizalize & Oak National Academy

Starter quiz

The expression $2x+5y-1$ can not be ______ further.
- 'simplified' ✓
Match each expression to it's simplified form.
- $5 \times y$
  
  ⇔
  
  $5y$ ✓
- $5 \times x$
  
  ⇔
  
  $5x$ ✓
- $x \times y$
  
  ⇔
  
  $xy$ ✓
- $-5 \times y$
  
  ⇔
  
  $-5y$ ✓
- $x \times -5$
  
  ⇔
  
  $-5x$ ✓
Which of the below will correctly evaluate $6 \times 82$ ?
- $6 \times 8 + 2$
- $6 \times 8 + 6 \times 2$
- $6 \times 80 + 2$
- $6 \times 80 +6 \times 2$ ✓
Simplify $4 \times 2a$
- $6a$
- $8a$ ✓
- $4a^2$
- $6a^2$
- $8a^2$
Match the expressions.
- $3 \times -4a$
  
  ⇔
  
  $-12a$ ✓
- $3 \times -4b$
  
  ⇔
  
  $-12b$ ✓
- $-3 \times -4a$
  
  ⇔
  
  $12a$ ✓
- $-6b \times -2$
  
  ⇔
  
  $12b$ ✓
- $-3 \times 2a \times -2b$
  
  ⇔
  
  $12ab$ ✓
- $-3 \times -2a \times -2b$
  
  ⇔
  
  $-12ab$ ✓
Which of these is the correct simplification of the expression $-y \times y + 5 \times y \times (-3) \times y$
- $15y^4$
- $-16y^2$ ✓
- $-y^2+2y$
- $16y^2$