4.44×9.8×2.5怎么简便计算?
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原式=(4*1.11)*9.8*2.5
=1.11*9.8*(4*2.5)
=1.11*9.8*10
=1.11*98
=1.11*(100–2)
=1.11*100–1.11*2
=111–2.22
=108.78
=1.11*9.8*(4*2.5)
=1.11*9.8*10
=1.11*98
=1.11*(100–2)
=1.11*100–1.11*2
=111–2.22
=108.78
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解
=1.11*4*2.5*(10-0.2)
=1.11*10*(10-0.2)
=11.1*(10-0.2)
=111-2.22
=108.78
=1.11*4*2.5*(10-0.2)
=1.11*10*(10-0.2)
=11.1*(10-0.2)
=111-2.22
=108.78
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原式=4*1.11*9.8*2.5
=10*1.11*9.8
=1.11*98
=1.11*(100-2)
=1.11*100-1.11*2
=111-2.22
=108.78
=10*1.11*9.8
=1.11*98
=1.11*(100-2)
=1.11*100-1.11*2
=111-2.22
=108.78
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4.44×9.8×2.5
=1.11×4×9.8×2.5
=1.11×9.8×(4×2.5)
=1.11×9.8×10
=1.11×(100-2)
=1.11×100-1.11×2
=111-2.22
=108.78
=1.11×4×9.8×2.5
=1.11×9.8×(4×2.5)
=1.11×9.8×10
=1.11×(100-2)
=1.11×100-1.11×2
=111-2.22
=108.78
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4.44x9.8x2.5
=(2.5x(4+0.4+0.04))x9.8
=(10+1+0.1)x9.8
=11.1x(10-0.2)
=111-2.22
=108.78
=(2.5x(4+0.4+0.04))x9.8
=(10+1+0.1)x9.8
=11.1x(10-0.2)
=111-2.22
=108.78
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