用递等式计算,能简算的要简算:2.6×(2.139÷9.3×6.2)4.23×101-4.
用递等式计算,能简算的要简算:2.6×(2.139÷9.3×6.2)4.23×101-4.2376.3×27-76.3×17(8×5.27)×1.252.3×30×1.2...
用递等式计算,能简算的要简算:2.6×(2.139÷9.3×6.2)4.23×101-4.2376.3×27-76.3×17(8×5.27)×1.252.3×30×1.256.93×10.1.
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(1)2.6×(2.139÷9.3×6.2)
=2.6×(2.3×6.2)
=2.6×14.62
=37.076
(2)4.23×101-4.23
=4.23×(101-1)
=4.23×100
=423
(3)76.3×27-76.3×17
=76.3×(27-17)
=76.3×10
=763
(4)(8×5.27)×1.25
=8×5.27×1.25
=(8×1.25)×5.27
=10×5.27
=52.7
(5)2.3×30×1.25
=69×1.25
=86.25
(6)6.93×10.1
=6.93×(10+0.1)
=6.93×10+6.93×0.1
=69.3+0.693
=69.993
=2.6×(2.3×6.2)
=2.6×14.62
=37.076
(2)4.23×101-4.23
=4.23×(101-1)
=4.23×100
=423
(3)76.3×27-76.3×17
=76.3×(27-17)
=76.3×10
=763
(4)(8×5.27)×1.25
=8×5.27×1.25
=(8×1.25)×5.27
=10×5.27
=52.7
(5)2.3×30×1.25
=69×1.25
=86.25
(6)6.93×10.1
=6.93×(10+0.1)
=6.93×10+6.93×0.1
=69.3+0.693
=69.993
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展开全部
(1)2.6×(2.139÷9.3×6.2)
=2.6×(2.3×6.2)
=2.6×14.62
=37.076
(2)4.23×101-4.23
=4.23×(101-1)
=4.23×100
=423
(3)76.3×27-76.3×17
=76.3×(27-17)
=76.3×10
=763
(4)(8×5.27)×1.25
=8×5.27×1.25
=(8×1.25)×5.27
=10×5.27
=52.7
(5)2.3×30×1.25
=69×1.25
=86.25
(6)6.93×10.1
=6.93×(10+0.1)
=6.93×10+6.93×0.1
=69.3+0.693
=69.993
=2.6×(2.3×6.2)
=2.6×14.62
=37.076
(2)4.23×101-4.23
=4.23×(101-1)
=4.23×100
=423
(3)76.3×27-76.3×17
=76.3×(27-17)
=76.3×10
=763
(4)(8×5.27)×1.25
=8×5.27×1.25
=(8×1.25)×5.27
=10×5.27
=52.7
(5)2.3×30×1.25
=69×1.25
=86.25
(6)6.93×10.1
=6.93×(10+0.1)
=6.93×10+6.93×0.1
=69.3+0.693
=69.993
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评论
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