Year 2 · Addition

Add 2-digit numbers (no carrying)

Two ways to add 47 + 38: jump along a number line in easy steps (you can see the number growing), or line the digits up in columns.

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Method 1, jumps: start at the first number.
Jump by the tens, then the ones of the second number.
Where you land is the answer.
Method 2, columns: add the ones. If they make 10 or more, write the ones digit and carry 1.
Add the next column, plus any carry. Keep going left.

Method 1: Jumps

Start at 47. Jump forward by 30, then 8.

47 + 38

47 + 30 = 77

77 + 8 = 85

47 + 38 = 85

Method 2: Columns

Line up the digits. Add each column from the right, carrying when you pass 10.

47 + 38

Work right to left, one column at a time.

47 + 38 = 85

With a free account, these play as step-by-step animations.

Watch out

Do not forget the carried 1.

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