1
What is your phone number?
Sign 'YOUR', 'PHONE', and then 'NUMBER' by bringing your pinched fingertips together and twisting your wrists in opposite directions. Since this is a question asking for specific information, remember to furrow your eyebrows while signing.
2
I have a large number of books.
You can sign 'I', 'HAVE', 'LARGE', 'NUMBER', 'BOOKS'. When signing 'NUMBER', make sure your pinched fingertips stay touching as your wrists pivot smoothly. Keep the movement isolated to your wrists rather than using your whole arms.
3
Pick a number between one and ten.
Sign 'CHOOSE', 'NUMBER', 'ONE', 'THROUGH', 'TEN'. For the word 'NUMBER', focus on the smooth twisting motion of the pinched hands touching each other, ensuring one wrist turns inward while the other turns outward.