You write the larger number above the smaller number, so that the digits for each place value line ... Rename 3 as 13 and then subtract: 13 - 7 = 6 If you can subtract two 3-digit numbers from ...

Addition involves finding the total of two or more numbers or amounts. There are different things you can use to help you add. You can use number lines ... of adding 3-digit and 1-digit numbers ...