Short Blocks

Maths Year 2 Autumn Place Value

Each unit has everything you need to teach a set of related skills and concepts.

Count to 100, identify number, estimate (suggested as 2 days)

Planning and Activities

Day 1 Teaching
Use a 1-100 bead bar to show children how to locate 2-digit numbers by identifying the 10s either side. Children repeat on bead strings. Then demonstrate locating and writing numbers on a beaded number line and a landmarked number line.
Group activities
Use the in-depth problem-solving investigation ‘100 Square Jigsaw’ from NRICH as today’s group activity.
Or, use these activities:
-- Most children roll two 1-10 or 0-9 dice to generate two random 2-digit numbers, which they mark on a beaded line. They compare these pairs of numbers.
-- Some children identify multiples of 10 that a third random number lies between.

Day 2 Teaching
Show a quantity of supermarket vouchers and ask children to estimate within a range and to the nearest 10. Model how to count the vouchers efficiently by grouping in 10s, or 5s for smaller numbers.
Group activities
-- Children use pasta shapes in mugs to estimate quantities, then count efficiently by grouping into 10s.

You Will Need

  • 0-100 bead bar, tags & bead strings
  • Additional activity sheets (see resources)
  • About 170 supermarket vouchers
  • Small sorting hoops or plates
  • Identical mugs or cups, a cloth, pasta shapes

Mental/Oral Maths Starters

Day 1
Count, read and write numbers to 100 (pre-requisite)

Suggested for Day 2
Pairs to 6 (simmering skills)

Mastery: Reasoning and Problem-Solving

  • Draw a line. Mark the ends 0 and 100. Draw marks for 50, 80 and 20.
  • Which numbers are in the wrong place on this line?
    87, 88, 90, 91, 89
  • Write all the numbers between 20 and 100 that have a 10s digit that is 1 more than the 1s digit, e.g. 21. Convince me you’ve found them all.


In-depth Investigation: 100 Square Jigsaw
Use your knowledge of counting to piece together a jigsaw of the 100 square. 100 Square Jigsaw from nrich.maths.org.

Extra Support

Beady Numbers
Locating 2-digit numbers on a bead string; saying which is more