The Year 2 Subtract From a 10 PowerPoint guides both teachers and children through the lesson, including use of the varied fluency, reasoning and problem solving, deeper reasoning and scaffolded resources. Key learning information about this step:
Key Vocabulary
multiples of 10: Counting in groups of 10. The ones digit will always be a 0.
number bonds: Two numbers that join together to make a different whole number.
fact family: Four number sentences that use the same 3 numbers.
They show how addition and subtraction are linked.
number line: A straight line which has numbers placed at equal points. Most number lines begin at 0, although this is not always the case.
Varied Fluency
Knowledge Organiser
• Designed to support all children via key information and examples.
Scaffolded Examples
Counting and crossing out counters in ten frames; using a number bond to 10 and a number line to subtract 2 from 30.
Support
• Q1: Use ten frames to subtract; the counters taken away are already crossed out.
• Q2: Use number bonds to 10 to subtract; the number bond is given.
• Q3: Use a fully labelled number line to subtract.
Core
• Q1: Use ten frames to subtract; counters not crossed out.
• Q2: Use number bonds to 10 to subtract; find the number bond first.
• Q3: Use a number line with only start and end points labelled to subtract.
Stretch
• Q1: Use ten frames to find the missing number taken away; the start number and the answer are given.
• Q2: Use number bonds to 10 to find the missing numbers in a bond and two related subtractions.
• Q3: Use a number line with only the end numbers labelled to find the missing number taken away.
Reasoning and Problem Solving
Support
• Q1: Reasoning – decide whether a character has subtracted from a multiple of 10 correctly; ten frames with the counters crossed out given.
• Q2: Reasoning – decide whether a character is correct about the ones digits of two subtractions shown with ten frames and a fully labelled number line.
• Q3: Problem Solving – complete part-whole models with a multiple of 10 as the whole; one part is given.
Core
• Q1: Reasoning – decide whether a character has subtracted from a multiple of 10 correctly; ten frames with the counters crossed out given.
• Q2: Reasoning – decide whether a character is correct about the ones digits of two subtractions shown with ten frames and a fully labelled number line.
• Q3: Problem Solving – complete part-whole models with a multiple of 10 as the whole; one part is given.
Stretch
• Q1: Reasoning – decide whether a character has subtracted from a multiple of 10 correctly; ten frames with the counters crossed out given.
• Q2: Reasoning – decide whether a character is correct about the ones digits of two subtractions shown with ten frames and a fully labelled number line.
• Q3: Problem Solving – complete part-whole models with a multiple of 10 as the whole; one part is given.
Deeper Reasoning
The question in this set focuses on identifying all possible subtraction calculations shown by a number line to deepen understanding in subtracting numbers using concrete objects and pictorial representations, including: a two-digit number and ones; a two-digit number and tens and two two-digit numbers.
