Lesson 2.8 More information on this strategy is available on Animated Math Model #14. Lesson 2.9 Vocabulary Compatible numbers numbers that are easy to compute with mentally – Estimate to find an answer that is close to the exact amount – Inverse operations opposite operations, or operations that undo each other, such as – multiplication and division Remainder the amount left over when a number cannot be divided equally –
Lesson 2.8 More information on this strategy is available on Animated Math Model #14. Lesson 2.9 Vocabulary Compatible numbers – numbers that are easy to compute with mentally Estimate – to find an answer that is close to the exact amount Inverse operations – opposite operations, or operations that undo each other, such as multiplication and division Remainder – the amount left over when a number cannot be divided equally