Math Lab

Make 10 With Two Numbers

Addition · Class I

Pick a number; see what makes 10.

3
type a value
010
Live values
  • Partner to make 107
  • Check sum10
Live readout
Partner to make 107
Check sum10
First number3

Formulas in this lab

  • Partner to make 10
    10−a10 - a
  • Check sum
    a+(10−a)a + (10 - a)
Tip: Number bonds of 10 are math superpowers!

Frequently asked questions

▶What does make 10 mean?

Making 10 means finding two numbers that add up to 10. For example, 3 and 7 make 10, and so do 4 and 6. Knowing all the pairs of 10 helps you add bigger numbers later.

▶How do I use the make-10 lab?

Pick any number from 0 to 10 with the slider. The lab will show you the matching number that completes 10. Try every number and you will learn all the pairs by heart.

▶When do we use number pairs of 10?

When you spend 7 rupees from a 10-rupee note, you get 3 rupees back. When you eat 4 biscuits from a pack of 10, 6 are left. These are real make-10 moments at home.

▶Did you know about pairs of 10?

There are only six special pairs to remember: 0 and 10, 1 and 9, 2 and 8, 3 and 7, 4 and 6, 5 and 5. Once you know these, mental maths feels much easier.

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