3.3x3.5+6.6x3.1+9.9x0.1怎么简便运算?
3个回答
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解:3.3x3.5+6.6x3.1+9.9x0.1等于( 33 )
∵已知需求出3.3x3.5+6.6x3.1+9.9x0.1等于多少
A × (B + C)= A × B + A × C
∴3.3 x 3.5 + 6.6 x 3.1 + 9.9 x 0.1
= 3.3 × 3.5 + 3.3 × 2 × 3.1 + 3.3 × 3 × 0.1
= 3.3 × 3.5 + 3.3 × (2 × 3.1)+ 3.3 × (3 × 0.1)
= 3.3 × 3.5 + 3.3 × 6.2 + 3.3 × 0.3
= 3.3 × (3.5 + 6.2 + 0.3)
= (3×10+3)/10 × (9.7 + 0.3)
= 33/10 × 10
= 33
答:3.3x3.5+6.6x3.1+9.9x0.1等于33
∵已知需求出3.3x3.5+6.6x3.1+9.9x0.1等于多少
A × (B + C)= A × B + A × C
∴3.3 x 3.5 + 6.6 x 3.1 + 9.9 x 0.1
= 3.3 × 3.5 + 3.3 × 2 × 3.1 + 3.3 × 3 × 0.1
= 3.3 × 3.5 + 3.3 × (2 × 3.1)+ 3.3 × (3 × 0.1)
= 3.3 × 3.5 + 3.3 × 6.2 + 3.3 × 0.3
= 3.3 × (3.5 + 6.2 + 0.3)
= (3×10+3)/10 × (9.7 + 0.3)
= 33/10 × 10
= 33
答:3.3x3.5+6.6x3.1+9.9x0.1等于33
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3.3x3.5+6.6x3.1+9.9x0.1
=3.3x3.5+3.3x2x3.1+3.3x3x0.1
=3.3x(3.5+6.2+0.3)
=3.3x10
=33
=3.3x3.5+3.3x2x3.1+3.3x3x0.1
=3.3x(3.5+6.2+0.3)
=3.3x10
=33
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3.3×3.5+6.6×3.1+9.9×0.1
=3.3×3.5+3.3×2×3.1+3.3×3×0.1
=3.3×(3.5+6.2+0.3)
=3.3×10
=33
=3.3×3.5+3.3×2×3.1+3.3×3×0.1
=3.3×(3.5+6.2+0.3)
=3.3×10
=33
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