3 Can count to 1,000 and in reverse!
1-3 Knows what follows 99, 999 etc.
1 Knows by heart addition and subtraction facts in region of twenty (number bonds)
1/2 Knows multiplication tables 1 to 10 at least (both in order and out of sequence)
2/3 Knows these as division (not only 6 times 4 is 24 and 24 is 4 multiplied by 6 but also 24 shared between 6 is 4 etc.)
3 Tricks of 10 x table; 9, 5, 11, and others
2 Odd and Even numbers (understands their difference)
2/3 Uses place value in range of 4 places correctly, i.e. shows sense of distinction between one in twelve and 138 in use)
(The above are needed before fractions can be efficiently tackled.)