Compensation is a strategy when you take an amount from one quantity and give it to the other quantity to make it easy to do mental math.
For example: 28 + 35 = ?
You can take 2 from 35 (making it 33) and give it to 28 to make it 30, so you know in your head that 30 + 33 = 63.
The following number talks consist of three or more sequential problems. The sequemce of the problems with a given number talk allows students to apply strategies from previous to subsequent problems. These number talk problems may be used in two ways.
Selected at random from each category
Navigated in a systematic order by selecting problems with smaller numbers from a categroy, then building on larger numbers