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.

2024-12-11 21:19:28
推荐回答(2个)
回答1:


(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

回答2:

(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