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Whinless Down Academy

Whinless Down Academy

Term 5

Year 3 Term 5

Key Concepts – Number – Number and place value

  • To know that the value of a digit can change depending on where it is within a number
  • Children know that addition is commutative but subtraction is not
  • Children know that < means less than and that > means greater than and that we use these symbols to compare numbers
  • Understand the value of a 0 within a number
  • Children understand the value of a number and can use this to plot numbers on a number line
  • That when you count in steps of tens, the ones column does not change; when you count in hundred the tens column does not change
  • Know that if you add 1/10/100 to 9/90 or 900, this will equal ten and therefore change the digit in the column to the left hand side as well.
  • Children can partition numbers in order to add or subtract. Children know that the tens need to be added together, and the ones added together and that the totals need to be recombined together to find the total

Key Vocabulary

Ones, Tens, Hundreds

Place value


Fewer, Fewest




Approximate, Approximately

Exact, Exactly

Just over/under

About the same



Key Concepts –Topic- Measure- Mass/ capacity

  • Children understand the difference between kg and g and understand which unit of measurement is appropriate to use
  • Children understand the difference between l and ml and understand which unit of measurement is appropriate to use
  • That kg means kilogram and the word ‘kilo’ means 1000
  • Children to understand that scales may not always increase in intervals of 1 and that we must calculate what the increments are before reading a scale
  • Children understand the difference between volume and capacity

Key Vocabulary


Weight, Weighs






Gram (g)

Kilogram (kg)



Common Misconceptions – Number and place value

  • When using dienes, children see a tens block as ten, rather than a representation of 10
  • Children do not understand the value of 0 and therefore miss this out from their number
  • Children believe that subtraction is commutative
  • Children assume that the bigger the digit, the greater value it has


Common Misconception – Measure- Mass/ capacity

  • That scales always increase in intervals of 1
  • That capacity and volume mean the same
  • Children do not understand what the word ‘volume’ means and assume its related to music