What is the first step in estimating 56×27

You round 56 to 60 and 27 to 30 then multiply 60 ×30 witch equals 1,800

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)