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计算.3.12÷1.2-1.2×0.6       

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计算.
3.12÷1.2-1.2×0.6       

3000÷24+103×32               

55×66÷(11×11)
11
3
(1)3.12÷1.2-1.2×0.6
=2.6-0.72
=1.88;
(2)3000÷24+103×32
=125+3296
=3421;
(3)55×66÷(11×11)
=55×66÷11÷11
=(55÷11)×(66÷11)
=5×6
=30;
(4)
11
3×12.5×
9
10×8
=(
11

9
10)×(12.5×8)
=
33
10×100
=330;
(5)
5
8-(
1
2+
3
5)×
5
11
=
5
8-
11
10×
5
11
=
5
8-
1
2
=
1
8;
(6)123×5.67+8.77×567
=123×5.67+877×5.67
=(123+877)×5.67
=1000×5.67
=5670.