Find the missing number
Keep both sides of an addition or subtraction equation equal.
Independent Pi Leo Academy learning material organised around the Victorian Curriculum F–10 Version 2.0 Level 4 descriptors; independent curriculum review is continuing. Year 4 is not an official NAPLAN testing year; NAPLAN is held in Years 3, 5, 7 and 9. It is not an official VCAA, ACARA, NAPLAN, government or IXL resource.
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What number makes this equation true? 19 + 24 = □ + 19
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Answer: 24
- Calculate the complete side: 19 + 24 = 43.
- Find the missing part: 43 − 19 = 24.
- Check: 19 + 24 = 24 + 19. Both sides equal 43.
- The same addends appear in a different order; their sum stays the same.
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Curriculum reference
Victorian Curriculum F–10 Version 2.0
VC2M4A01
find unknown values in numerical equations involving addition and subtraction, using the properties of numbers and operations
These quizzes practise concepts within this topic. Multiple-choice answers alone do not demonstrate drawing, conducting an investigation or using a digital tool.
- VC2M4A01-C01Find unknown values in numerical addition equations.
- VC2M4A01-C02Find unknown values in numerical subtraction equations.
- VC2M4A01-C03Use properties of numbers to find unknown values.
- VC2M4A01-C04Use properties of operations to find unknown values.
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Skills in this topic
Traceable coverage
Subskills
Supplied alignment skills
- 01Properties of addition
- 02Complete the addition number sentence
- 03Complete the subtraction number sentence
- 04Complete the addition or subtraction number sentence - up to 100
- 05Balance addition equations
- 06Balance subtraction equations
- 07Balance addition and subtraction equations - up to 100