Children practise recognising the place value of each digit in a two-digit number. Six Beads from nrich.maths.org.
Adding and subtracting 10 using the 1-100 grid
Coin Counting On
Finding the total of pairs of coins (up to 20p)
Revising pairs to 10; using pairs to 10 to find pairs to 20
What's the Gap?
Saying the next 10s number; finding how many to the next 10s number, e.g. 36 + ? = 40