What is the difference between the signs for the numbers 1-9 and the signs for the numbers 10-19? the signs for numbers 1-9 all incorporate the same handshape and the numbers 10-20 all incorporate a different handshape the signs for numbers for 1-9 are made using handshape only but the numbers for 10-20 are made using handshape and movement the signs for numbers 1-9 are created with the palm facing inward while the numbers for 10-20 are created with the palm facing outward the signs for numbers 1-9 use one hand while the signs for numbers 10-20 use two hands