Page 1 - Are the numbers in order? Read each line carefully. Once the mistake is found, cross it out and write the correct number above it.
Page 2 - Read each line of numbers and fill in what is missing.
Page 3 - Read each line carefully. If the numbers are in the correct order circle 'yes'. If they are not in the correct order circle 'no'.
Page 4 - Look at the first number then write the three numbers that should come next.
Page 5 - Count backwards and fill in the missing number in each group.