计算下面各题:9.7x5.4-2.7X5.4,12-3.8-6.2,15一1.2X7
展开全部
12-3.8-6.2=12-(3.8-6.2)=12-10=2。
15-1.2*7=15-8.4=6.6
9.7*5.4-2.7*5.4=(9.7-2.7)*5.4=2*5.4=10.8
计算题目
15-1.2*7=15-8.4=6.6
9.7*5.4-2.7*5.4=(9.7-2.7)*5.4=2*5.4=10.8
计算题目
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展开全部
9.7x5.4-2.7x5.4
=(9.7-2.7)×5.4
=7×5.4
=37.8
12-3.8-6.2
=12-(3.8+6.2)
=12-10
=2
15-1.2×7
=15-8.4
=6.6
=(9.7-2.7)×5.4
=7×5.4
=37.8
12-3.8-6.2
=12-(3.8+6.2)
=12-10
=2
15-1.2×7
=15-8.4
=6.6
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展开全部
9.7x5.4-2.7x5.4
=5.4x(9.7-2.7)
=5.4x5
=27
12-3.8-6.2
=12-(3.8+6.2)
=12-10
=2
15-1.2x7
=15-8.4
=6.6
=5.4x(9.7-2.7)
=5.4x5
=27
12-3.8-6.2
=12-(3.8+6.2)
=12-10
=2
15-1.2x7
=15-8.4
=6.6
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展开全部
9.7×5.4-2.7×5.4
=(9.7-2.7)×5.4
=7×5.4
=37.8
12-3.8-6.2
=12-(3.8+6.2)
=12-10
=2
15-1.2×7
=15-8.4
=6.6
=(9.7-2.7)×5.4
=7×5.4
=37.8
12-3.8-6.2
=12-(3.8+6.2)
=12-10
=2
15-1.2×7
=15-8.4
=6.6
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展开全部
1)9.7x5.4一2.7x5.4
=(9.7一2.7)ⅹ5.4
=7x5.4
=37.8;
2)12一3.8一6.2
=12一(3.8+6.2)
=12一10
=2;
3)15一1.2ⅹ7
=15一8.4
=6.6。
=(9.7一2.7)ⅹ5.4
=7x5.4
=37.8;
2)12一3.8一6.2
=12一(3.8+6.2)
=12一10
=2;
3)15一1.2ⅹ7
=15一8.4
=6.6。
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