Harder subtraction skills (One minute challenge)

Subtraction around the ten thousands boundary. How many can you answer in a minute?

Subtract any 3 digit number from 1,000. How many can you answer in a minute?

Subtract any 4-digit multiple of 10 from 10,000. How many can you answer in a minute?

Subtract a multiple of 1,000 from a 5-digit number. How many can you answer in a minute?

Subtract a multiple of 1,000 from a 6-digit number. How many can you answer in a minute?

Subtracting a multiple of 1,000 from a 6-digit number. How many can you answer in a minute?

Subtract a multiple of 10,000 from a 6-digit number. How many can you answer in a minute?

Subtract a multiple of 100,000 from a 6-digit number. How many can you answer in a minute?