能简算的要简算1.2-0.5×1.8÷0.9 &...
能简算的要简算1.2-0.5×1.8÷0.98×7×1.2535×8.8+1.2×35+60%[15×(50%+13)]÷58....
能简算的要简算1.2-0.5×1.8÷0.9 8×7×1.2535×8.8+1.2×35+60%[15×(50%+13)]÷58.
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(1)1.2-0.5×1.8÷0.9
=1.2-0.5×(1.8÷0.9),
=1.2-0.5×2,
=1.2-1,
=0.2;
(2)8×7×1.25
=8×1.25×7,
=10×7,
=70;
(3)
×8.8+1.2×
+60%,
=0.6×8.8+1.2×0.6+0.6,
=(1.2+8.8)×06+0.6,
=10×0.6+0.6,
=6+0.6,
=6.6.
(4)[15×(50%+
)]÷
,
=[15×0.5+15×
]×
,
=[7.5+5]×
,
=12.5×
,
=20.
=1.2-0.5×(1.8÷0.9),
=1.2-0.5×2,
=1.2-1,
=0.2;
(2)8×7×1.25
=8×1.25×7,
=10×7,
=70;
(3)
3 |
5 |
3 |
5 |
=0.6×8.8+1.2×0.6+0.6,
=(1.2+8.8)×06+0.6,
=10×0.6+0.6,
=6+0.6,
=6.6.
(4)[15×(50%+
1 |
3 |
5 |
8 |
=[15×0.5+15×
1 |
3 |
8 |
5 |
=[7.5+5]×
8 |
5 |
=12.5×
8 |
5 |
=20.
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