Martin had 7 pounds of grapes left and gave away 2/5 of them explain how to use comparable numbers to estimate the amount of grapes he gave away

Answer:See below  Step-by-step explanation:Compatible numbers are numbers that are easy to use in mental arithmetic. Martin gave away ⅖ of 7 lb of grapes, so the amount he gave away was ⅖ × 7 lb ⅖ is close to ²/₄ (½), and it is easy to take half of something mentally. Half of 7 is about 3, so Martin gave away about 3 lb of grapes (the exact answer is 2.8 lb).