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Mathematics
Beginner
50 mins
Teacher/Student led
Learning Goals
Learning Outcomes
Lesson Files
+80 XP
Teacher-led from the board. Pupils do not need a device, but can follow on one.
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IWB/Projector/Large Screen

Place Value to 100: Tens and Units

Explore how two-digit numbers are made from tens and units. Use place-value blocks to build numbers, see how a digit's position changes its value, and record your work in columns.

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    Place value blocks
    Place value blocks

    1 - Getting Started ~4 mins

    Illustration for Getting StartedHow many pupils are in our class today? Is that number closer to ten, or closer to a hundred?

    Have a think, then put up your hand. We are going to look at how every two-digit number is made from a number of tens and a number of leftover units.

    👇 Mark your steps as done as you complete them.

    +5 XP

    2 - Watch and Notice ~9 mins

    The place-value blocks show one number at a time in a tens column and a units column. Watch how many ten-rods and how many single cubes make each number.

    👇 Mark your steps as done as you complete them.

    +10 XP

    3 - Try It Together ~7 mins

    Now it's our turn — let's build some numbers together using the T and U columns.

    We will build four numbers, one at a time: 36, then 63, then 50, then 8. For each one, a pupil comes up to the board and builds it with ten-rods and single cubes. The rest of us check how many tens and how many units it has.

    Build the number

    +15 XP

    4 - Sketch the Columns in Your Copy ~2 mins

    COPYBOOK MOMENT

    Illustration for Sketch the Columns in Your CopyIn your maths copy, draw two place-value columns and label them T and U.

    Then write each of these numbers into the columns, one under the other:

    • 24
    • 40
    • 7
    • 86

    Read each number aloud after you write it.

    +10 XP

    5 - Class Challenge ~9 mins

    Today we build these numbers together at the board: 30, then 47, then 80, then 99.

    Key point

    For each one, work out how many tens and how many units make the number, build it, and check it.

    Build the number

    +15 XP

    6 - What Did We Notice? ~3 mins

    MATHS TALK

    Why does where a digit sits — in the tens column or the units column — change what it is worth?

    Think about the 4 in 47 and the 4 in 74. Same digit. Is it worth the same amount?

    +10 XP

    7 - What's Next ~2 mins

    Today you built two-digit numbers from tens and units, and you saw that where a digit sits decides what it is worth.

    Coming up

    Next time we add a new column on the left — the hundreds — and build numbers all the way up to 1,000.

    +5 XP
    Pupil practice
    Module 1 · Place Value: Whole Numbers to 1,000 and Rounding Number
    Lesson 1 · Place Value to 100: Tens and Units
    Download Activity Book page (PDF)
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