Priority of operations with positive integers | Maths

Starter quiz

Complete the statement. The additive inverse of a number is a number that, __________
- when added to the original number, gives the sum of 0 ✓
- when added to the original number, gives the sum of 1
- when multiplied by the reciprocal the product is 1
- when multiplied by the reciprocal the product is (-1)
Match each number with its additive inverse.
- 4
  
  ⇔
  
  (-4) ✓
- (-40)
  
  ⇔
  
  40 ✓
- 0.4
  
  ⇔
  
  (-0.4) ✓
- (-400)
  
  ⇔
  
  400 ✓
Select all the fractions that are equivalent to ${2} \over {3}$
- ${1} \over {3}$
- ${1} \over {2}$
- ${4} \over {6}$ ✓
- ${20} \over {30}$ ✓
- ${3} \over {2}$
Match each calculation with an equivalent commutative calculation.
- $A + B$
  
  ⇔
  
  $B + A$ ✓
- $A\times B$
  
  ⇔
  
  $B\times A$ ✓
- $A + B + C$
  
  ⇔
  
  $B + C + A$ ✓
Work out the missing number: 9.8 × 0.5 + 9.8 × ______ = 9.8
- '0.5' ✓
Work out the missing number: 34 × 0.8 + 34 × ______= 68
- '1.2' ✓