1、五年级五班全班81人,每人分两张同样大的卡片,一共需【特荐

1、五年级五班全班81人,每人分两张同样大的卡片,一共需【特荐 1、五年级五班全班81人，每人分两张同样大的卡片，一共需要多少张, 81 × 2 162 (张) 答:一共需要162张。根据刚才我们分卡片的过程，说出两道除法算式, 162 ? 2 81 162 ? 81 2仔细观察下面三个算式，根据刚才分卡片的过程，回忆整数除 法的意义是什么, 81 × 2 162 162 ? 81 2 162 ? 2 81 已知两个因数的积与其中 一个 因数，求另一个因数的运算。北师大数学五年级第三单元 分数除法( ) 分数除法(一) 3(1)、把一张纸的 4 平均分成3份，每份是这张纸的几分之几, (2)、把一张纸的 3 平均分成4份，每份 4是这张纸的几分之几,你发现了什么, 除以一个整数(0除外)，等于乘这个整数的倒数。练一练1、计算下面各 3 6 8 ?5 13 ?9 5 8 8 ? 10 15 ? 62、数学诊所3 3 1 1 ? 3 × (? )7 7 3 72 2 43 ? 2 3 ×2 3 (×) 4 4 1 25 ? 2 ? 5 2 5 (×)4 9 1 99 ? 2 × 4 2 8 (×) 33、一架飞机3秒钟飞行了 4 千米平均1秒钟飞行多少千米,合多少米,4、解方程: 7 ,× 8 , 10 9 ×, , 18 2 ,× 9 , 19 3 10×, , 8 9hqAJS1bkuDNW5eoxHQ 9isBLU 3c mvFOY 7gqzIS1aktDM W5enxGQZ 8irBKU2cl vEOX6gpzIR0ajtCM V4enwGPZ-8hrAKT 2bluENX6fpyIR09jsCLV4dnwF PY-7hqAJT2bkuDN W5foyHR 9isBLU 3dmwFOY7gqzJS1bktD M W5eoxHQ8irBKU3c m vFOX6gpzIS1aktC MV4enxGQZ 8hrAKT2cl vEOX 6fpyIR0ajtCLV4dnwGPZ-8hqAJT2bluENX5foyHR09jsBLU 3dmwFPY-7gqzJS1bkuD N W5eoxHQ9isBKU3c m vFOY7gpzIS1aktD M W4enxGQZ8irBKT2cl vEOX 6gpyIR0ajtC 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