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1、练 习 一,564=14(个),答:平均每人分到14个。,2162=108(个),答:每篮装108个。,72,3,2,6,1,0,1,4,24,402,2,2,4,2,0,2,0,1,3.先估一估商是几位数,再计算,723=,2,2,2位数,201,4022=,3位数,203,812,4,2,8,2,0,2,0,3,8124=,3位数,224,4564=,3位数,456,4,2,4,6,0,6,2,1,1,1,5,4,1,4,306,612,2,3,6,2,0,2,0,6,6122=,3位数,1,1,105,525,5,1,5,5,0,5,0,5,5255=,3位数,2,2,4.计算并验算,7
2、34,2,6,1,6,1,1,3,3,7,7342,367,验算,367,2,3,1,7,4,2,4,1,4,0,1,636,6,6,0,3,3,6,6366,106,验算,106,6,3,6,6,6,6,0,1,565,5,5,1,1,6,1,3,5655,113,验算,113,5,6,1,5,5,5,5,1,5,0,1,780,6,6,3,8,8,7806,130,验算,130,6,8,7,0,1,1,1,0,0,805,5,5,3,6,3,5,0,1,1,0,5,0,370,3,1,3,6,0,1,7,2,3,9,1,8,8,1,(1)655=13 答:今年爷爷的年龄是孙子的13倍。,(2)666=11 答:今年爷爷的年龄是孙子的11倍。,8、春风小学有540名学生参加团体操表演,排成4种队形,平均每种队形多少人?如果排成5种队形呢?,4,1,5 4 0,1 4,3,1 2,2 0,2 0,0,5,5404,135(人),答:排成4种队形,平均每种队形135人。,5405,5,1,5 4 0,0,4 0,4 0,0,8,108(人),答:排成5种队形,平均每种队形108人。,答:每筒羽毛球24元。,137-65=72(元),72 3=24(元),3093=103(个),2122=106(个),106103,答:女孩打字快。,2,4,1,4,4,0,