Numbers in the 90s

Build numbers from 90 to 99 with tens and ones.

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About this lesson

Place value shows that the position of a digit tells you its worth: ones, tens, hundreds. In this Maths lesson, children sort blocks into ones, tens and hundreds.

The lesson has 2 key facts, an interactive activity and a 3-question quiz. Each quiz attempt is scored, and up to three stars can be earned.

When to use this lesson

How to practise at home

  1. Play the activity together: sort blocks into ones, tens and hundreds.
  2. Ask your child to explain one key fact in their own words.
  3. Take the quiz and try again until you earn three stars.

Practice questions

Show the 3 practice questions and answers
  1. 91 has how many tens? Answer: 9
  2. 91 has how many ones? Answer: 1
  3. 9 tens + 1 ones = ? Answer: 91

Frequently asked questions

What will my child learn in “Numbers in the 90s”?

The lesson covers these key facts: 91 = 9 tens + 1 ones. The digit 9 is in the tens place.

Which grade is “Numbers in the 90s” for?

It is written for Grade 2 pupils studying Maths. Related lessons on place value are listed at the bottom of this page.

How can I help my child practise “Numbers in the 90s” at home?

Play the activity together, so your child can sort blocks into ones, tens and hundreds. Then ask your child to explain one key fact in their own words and try the 3-question quiz. The quiz awards up to three stars.

Can this lesson be used in class?

Yes. The activity works well on a whiteboard as a starter, and the quiz is a quick check of understanding at the end of the lesson.

Do I need an account to use this lesson?

No. There is no sign-up. Stars and progress are saved in the browser on the device you use.

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