Over / Under? How do you know?

Help students reason through increasingly difficult computation tasks appropriate to their current ability. This game is highly variable from children just learning the concept of addition, to those that are doing computation with fractions and decimal numbers. All of these start with is _____________ over or under _________? Then follow that with "How do you know?"

Examples: Is 4 + 2 over or under 5? How do you know?

Is 5 + 6 over or under 10? How do you know?

Is 13 + 4 over or under 20? How do you know?

Is 58 + 48 over or under 100? How do you know?

Is 11 x 10 over or under 100? How do you know?

Is 4 x 12 over or under 50? How do you know?

Is 432 - 234 over or under 200? How do you know?

Is 99 x 9 over or under 1000? How do you know?

Is 1/4 + 7/8 over or under 1? How do you know?

You should continue to make up problems which cause your child to think. The goal is to reason mathematically, not to actually complete the calculation. This is appropriate from Kindergarten aged students through middle school.