You may also like

problem icon

Writing Digits

Lee was writing all the counting numbers from 1 to 20. She stopped for a rest after writing seventeen digits. What was the last number she wrote?

problem icon

Number Detective

Follow the clues to find the mystery number.

problem icon

Six Is the Sum

What do the digits in the number fifteen add up to? How many other numbers have digits with the same total but no zeros?

Digit Addition

Age 5 to 11 Challenge Level:

Try putting your starting number into a place value grid. How many 10s do you have at the beginning? How many 1s?

Add 9 to your number and then put your answer into the place value grid. How many 10s do you have now? How many 1s?

What do you notice?