Year 2 Spring Term Week 9 Lesson 4 Place Value, Addition and Subtraction Year 2 Spring Term Week 9 Lesson 4

Today we will be learning to: know which number is 1 or 10 more or less than a given number add and subtract understand place value.

Mental Activity Sit in groups. Make sure each group has a big piece of paper and a pen. The ‘leader’ is in charge of the pen.

The leader must choose a multiple of 10. Write it down. Circle it. I will call out a two-digit number.

Add the two-digit number to your number. Write the answer next to the original number. Check it. If it is right, put a  next to it. Swap ‘leaders’.

Main Activity Today we are going to be using our knowledge of a hundred square to work out missing numbers.

Write in the key numbers on the hundred square such as 1, multiples of 10 and 100.

The worms are hiding numbers. Wiggly worms 14 29 37 58 50 10 40 7 26 4 25 35 The worms are hiding numbers.

Find the answers on a hundred square. Wiggly worms 14 29 37 58 50 10 40 7 26 4 25 35 Find the answers on a hundred square.

Complete ‘Wiggly worms’ using a hundred square. Group Work Write some numbers on a blank wiggly worm for a classmate to complete. Try using the numbers between 101 and 200. Complete ‘Wiggly worms’ using a hundred square. Complete ‘Wiggly worms’. Explain the relationship between the numbers each time.