Counting in 50s is just like counting in 5s but with an extra zero. This is because the numbers are ten times bigger. There are 350 chocolates in 7 boxes. Another way you could have worked this ...

Counting on in twos, threes, fives and tens is easy, if you know your times tables. Test out your knowledge of counting on in twos, threes, fives and tens with this quiz, then read on to complete ...