Math Skill Builders: Whole Number Arithmetic

Skill Level Definitions

Addition Skill Levels

1. Add two numbers, the answer will be less than ten.
2. Add zero to a number.
3. Add two single digit numbers. Carry to the tens.
4. Add tens without carrying.
5. Add tens, carry to the tens.
6. Add tens, carry to the tens and hundreds.
7. Add hundreds without carrying.
8. Add hundreds, carry to the tens.
9. Add hundreds, carry to the tens and hundreds.
10. Add hundreds, carry to the tens and hundreds and thousands.
11. Add thousands, carry when necessary.
12. Add four two-digit numbers, carry when necessary.
13. Add four three-digit numbers, carry when necessary.

1. Subtract ones from ones.
2. Subtract tens without borrowing.
3. Subtract tens. Borrow from the tens.
4. Subtract tens. Borrow across a zero.
5. Subtract hundreds without borrowing.
6. Subtract hundreds. Borrow from the tens and hundreds.
7. Subtract hundreds. Borrow across zeros to the hundreds.
8. Subtract thousands without borrowing.
9. Subtract thousands. Borrow from the tens.
10. Subtract thousands. Borrow from the tens and hundreds.
11. Subtract thousands. Borrow from tens, hundreds and thousands.
12. Subtract thousands. Borrow across zeros to the thousands.
13. Subtract thousands. Borrow when necessary.

1. Multiply ones. The answer will be less than ten.
2. Multiply ones. The answer will be greater than ten.
3. Multiply ones by zero.
4. Multiply tens by ones. Carry to the tens.
5. Multiply ones by tens with a zero.
6. Multiply tens by ones. Carry to the hundreds.
7. Multiply hundreds by ones. Carry to the thousands.
8. Multiply tens by tens.
9. Multiply tens by tens with a zero.
10. Multiply hundreds by tens.
11. Multiply hundreds by tens with a zero.
12. Multiply hundreds by hundreds.
13. Multiply hundreds by hundreds with a zero.

1. Divide ones by ones with no remainder.
2. Divide zero by ones.
3. Divide tens by ones with no remainder.
4. Divide hundreds by ones with no remainder.
5. Divide thousands by ones with no remainder.
6. Divide tens by ones with a remainder.
7. Divide hundreds by ones with a remainder.
8. Divide hundreds by tens with no remainder.
9. Divide hundreds by tens with a remainder.
10. Divide thousands by tens with a remainder.
11. Divide thousands by hundreds with a remainder.
12. Divide ten-thousands by hundreds with a remainder.
13. Divide hundred-thousands by hundreds with a remainder.