(1)385×(215-209)(2)72×38+28×38(3)875+125×8904÷4×2(4)666×7÷6(5)3645-(1824+1645
(1)385×(215-209)(2)72×38+28×38(3)875+125×8904÷4×2(4)666×7÷6(5)3645-(1824+1645)...
(1)385×(215-209)(2)72×38+28×38(3)875+125×8904÷4×2(4)666×7÷6(5)3645-(1824+1645)
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(1)385×(215-209), =385×6, =2310; (2)72×38+28×38, =(72+28)×38, =100×38, =3800; (3)875+125×8904÷4×2, =875+125×8×1113÷4×2, =875+1000×1113÷4×2, =875+1113000÷2, =875+556500, =557375; (4)666×7÷6, =666÷6×7, =111×7, =777; (5)3645-(1824+1645), =3645-1824-1645, =3645-1645-1824, =2000-1824, =176. |
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