简算2.5×8×0.4×0.125 0.65×201 6.81+6.81×99 (1×2×3…10×11)÷(27×25
来源:学生作业帮 编辑:大师作文网作业帮 分类:数学作业 时间:2024/11/12 00:11:32
简算 2.5×8×0.4×0.125 | 0.65×201 |
6.81+6.81×99 | (1×2×3…10×11)÷(27×25×24×22) |
(1)2.5×8×0.4×0.125,
=(2.5×0.4)×(8×0.125),
=1×1,
=1;
(2)0.65×201,
=0.65×200+0.65×1,
=130+0.65,
=130.65;
(3)6.81+6.81×99,
=6.81×(1+99),
=6.81×100,
=681;
(4)(1×2×3…10×11)÷(27×25×24×22),
=(1×2×3…10×11)÷(11×2×6×4×5×5×3×9),
=
1×2×3…×10×11
11×2×6×4×5×5×3×9,
=7×8×2,
=112;
=(2.5×0.4)×(8×0.125),
=1×1,
=1;
(2)0.65×201,
=0.65×200+0.65×1,
=130+0.65,
=130.65;
(3)6.81+6.81×99,
=6.81×(1+99),
=6.81×100,
=681;
(4)(1×2×3…10×11)÷(27×25×24×22),
=(1×2×3…10×11)÷(11×2×6×4×5×5×3×9),
=
1×2×3…×10×11
11×2×6×4×5×5×3×9,
=7×8×2,
=112;
简算2.5×8×0.4×0.125 0.65×201 6.81+6.81×99 (1×2×3…10×11)÷(27×25
1;0.75—2又3\4+0.125的绝对值—负4又8\1 2;38又19分之8—8.19+11又19分之11—6.81
3.(1×2×3×4×…×9×10×11)÷(27×25×24×22)
几道数学计算题7/4÷7/8-2/3×(-6) -0.125÷1/4×(-8) (-10/3)×(-2.5)×4×(-3
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