兰兰做了45个仰卧起坐,清清做了52个。-q7r3g4H0J/F'g0G'x:i9d
(1)清清比兰兰多做了几个?-q7r3g4H0J/F'g0G'x:i9d
算式:提示.T2?+M'?-r1x/_(s,d-q7r3g4H0J/F'g0G'x:i9d
答:清清比兰兰多做了9B/`7M;o3D-q1U个。-q7r3g4H0J/F'g0G'x:i9d
(2)他俩一共做了多少个?-q7r3g4H0J/F'g0G'x:i9d
算式:提示.k:H9Z;n,^7[;O+C6];u'X'n-q7r3g4H0J/F'g0G'x:i9d
答:他俩一共做了(`-P)f;J8v7o个。-q7r3g4H0J/F'g0G'x:i9d