Class 1 Maths Chapter 5, How Many? (Addition and Subtraction of Single Digit Numbers), teaches children how to add (‘altogether / combine’) and subtract (‘take away / how many left’) using real-life pictures, finger counting, bead strings, and forward/backward jumps on a number strip.
What Class 1 Mathematics Chapter 5 Covers
Addition — ‘How Many Altogether?’: Combining two groups of children, cows, flowers, or dice dots and introducing the ‘+’ (plus) and ‘=’ (equals) signs.
Addition on the Number Line & Commutative Property: Jumping forward on the 0–19 number strip to add, and noticing that 3 + 4 gives the same total as 4 + 3.
Subtraction — ‘Take Away / How Many Left?’: Crossing out objects that fly away or break, introducing the ‘−’ (minus) sign, and jumping backward to subtract.
Exercises in Chapter 5
- Let us Do — Addition Stories (Pages 50–56): Count and add groups of items, hop on the number line, and write ‘+’ equations.
- Let us Do — Subtraction & Mixed Practice (Pages 57–63): Cross out dots to subtract and solve story problems up to 18.
Read Class 1 Mathematics Chapter 5 Online
More Chapters
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FAQ
What does addition mean in Class 1 Maths Chapter 5?
Addition means putting two or more groups together to find how many there are in all (altogether).
What happens when you add 0 to a number or subtract 0 from a number?
Adding 0 or subtracting 0 leaves the number unchanged (for example, 6 + 0 = 6 and 6 − 0 = 6).