L2 · One more, two more, one less, two less

Learning goal

“I can say the number that is one more, two more, one less, or two less than a number.”

More — a bigger number. One more is the next number when you count.

Less — a smaller number. One less is the number just before.

Number line — a line of numbers in order, from 0 to 20. Your finger can hop along it.

Worked example

What is one more than 13? Step 1: Find 13 on the number line. Step 2: Hop one step forward. Step 3: You land on 14. One more than 13 is 14.

Check yourself — explain it

One more means...

Paired problem — example still visible

What is one less than 9? -> 8

Faded completion — last step is yours

"One more than 16 is ___." -> 17

Ready to practise?

8 scored questions with a 3-rung hint ladder. Mastery needs 7/8 plus both gate questions.