= = 22+22+84 82-(28-22) 88+(88-28)= = = = = = 77-46+72 67-78+26 78+28-76 76+74-26= = = == = = =78-76+27 84-27+26= 4+27-26= = = = = = 87+27+84 68-(78-27) 88+(
77-46+32 65-38+26 79+19-56 56+74-26 = = = = = = = = 58-36+27 84-27+16= 4+27-16 = = = = = = 93+23+94 69-(39-23) 99+(25-24) = = = = = = 77-76+32 61-38+26 79+19-16 16+77-26 = = = = = = = = 18-36+27 87-27+16 30+(23-29) = = = = = = 73
数位对齐,从个位算起 加法算式满十进一 减法算式不够减向前借一
按题目要求,列竖式计算或者脱式计算.
先算乘除,后算加减.
2*5=10……积.
20x50/20x51/20x52一直乘到100就可以了. 老师居然叫你们玩这种无聊的游戏?该死!
列式计算:如36÷6= 6「36
10 9 1 个位0减9不够减,借一个十,一个十变成十个一,十个一减去九个一,还剩一个一.