Counting in 10/100
Objective: To be able to count on and back in 10s or 100s from any 2 digit numbers.
Year 3
Introduce activities as whole class.
If you wish to hyperlink to other activities you need to ensure that you are linked to the internet.
/ Page 1.Title page and objectives. Target group Year 3
/ Page 2. Children look at the number sequences. Click on white buttons to check answer. The teacher can also remove the numbers and ask the children to sequence the numbers.
/ Pages 3 This page introduces counting in hundreds. The children can ‘drag and drop’ the numbers onto the clouds.
/ Page 4. The purpose of this page is for the children to identify the changes in place value. These numbers can also be removed for the children to sequence. For differentiation the teacher can remove all of the numbers and use the pen tool to write numbers suitable for the child’s level of ability.
/ Page 5 This page intends to encourage the children to apply their knowledge of number sequences. The numbers can be removed and changed for a number at the bottom of the page. The children can use the pen tool to complete the number sequence. The ‘Help’ button will take you to 100 square page to demonstrate how you would work out the next number
/ Pages 6This page is intended to help children ‘crossover’ to the next hundred. Use the coloured cards to create sequences. Drag and drop the cards onto the number- line. The white cards extend to the green and the green extend to the pink. The snake is linked to a website that help extend and reinforce the children’s understanding of counting in sequences using a number line.
Another number line activity could be found at
/ Page 7 This page allows the children to use the digit cards to find the next three numbers. Drag the cards into the box to make the numbers.
/ Page 8 This page can be used in a number of ways.
  1. Use the fill tool, click on a sequence of numbers to demonstrate pattern.
  2. The coloured squares can be used to cover numbers in a sequence. The children can write on the squares then remove the square and self-correct.
The ghosts are linked to a website that allows the children to count in tens and hundreds using two and three digit numbers. A game that can be played independently