Fact families - addition and subtraction bonds to 20 Learn how part ... that have a different number of decimal places. Add 3-digit and 2-digit numbers Learn how to add 3-digit and 2-digit numbers ...

And always check your actual answer. Subtraction is the opposite to addition. So subtraction can always be checked by adding. Check that 182 - 37 = 145 by doing the sum: 145 + 37 = 182 Look out ...