Answer:
(30, 5) (30,10) x (20, 4) (20, 5) (20, 10)
Explanation:
Compatible numbers are numbers that can be easily used to perform mathematical operations like addition subtraction multiplication and division and can be rounded off to nearest 10, 100 or even 50
Compatible numbers to estimate 26x22
26 = (30, 5) (30,10) ( round 26 = 30)
22 = (20, 4) (20, 5) (20, 10) ( round 22 = 20)
thus 20 x 30 is close to 26 x 22
600 equivalent to 572 when you round off