Your role is to be an active listener who repeats and reviews and occasionally gives advice. Be careful not to take over the project. FISH - Aids in number recognition. Although calculators and computers are essential today, everyone needs to be able to come up with an estimate of the answer in their head. It's a skill that is learned and refined over time.
Parents can do several things at home to help their child.
Ask your child to give you a quick answer to lots of small math problems. They come in packages of three. That can mean using numbers to make it easier to do a problem in your head. It's hard to add 18 and 29 quickly, but it's easier to add 20 and 30. So the answer to 18 plus 29 should be about 50.