Match the math sentence that count on and back by tens.38+20=? 63+40=? 42+30=? 77-30=? 53-40=? 91-20=?

38+20= thirty-eight, forty eight, fifty eight.
63+40= sixty-three, seventy-three, eighty-three, ninety-three, one-hundred three
42+30=forty-two, fifty-two, sixty-two, seventy-two, eighty-two.77-30= Seventy-seven sixty-seven, fifty-seven, forty-seven 53-40=fifty-three, forty-three, thirty-three, twenty-three, thirteen
91-20= Ninety-one, eighty-one, seventy-one
This method is where you count up and down by tens.

Answer for 2: his profit would be $2.88 explanation: you have to first multiply 72 and 0.12 together to get $8.64 once you do that you know how much money the shopkeeper made from selling the candy bars individually. so you have to do 8.64-5.76=2.88 hope that ; )answer for 3: yeah i’m sorry i have no idea what number 3 is. i’m sorry i couldn’t with that.

D. i think it is the savings