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试题原文 |
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(1)(12-13)÷13+16, =(-1)÷13+16, =-
=15
(2)19÷(34+56), =19÷90, =
(3)551114÷11, =(551111+3)÷11, =(551111+3)×
=551111×
=50101+
=50101
(4)0.6×1825+60%×625+35×125, =0.6×1825+0.6×625+35×125, =0.6×(1825+625)+35×125, =0.6×2450+4375, =1470+4375, =5845; (5)(13+18-16)×24, =(31-16)×24, =15×24, =360; (6)5×(215+120)-512, =5×335-512, =1675-512, =1163. |
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