You can look at multiplication as repeated addition ... If you don't have a calculator, the grid method can really help. First, break down your numbers into hundreds, tens and units.
Start by multiplying the tens from each number together, and then multiply the tens from each number by the ones, so that all four sections of the grid are completed. Image caption, Start by ...
Another great activity to do at home is print some multiplication grids and explore patterns with your child. A first start might be to give your child a blank or partially blank multiplication ...