7×101 5.5×9.8 82×0.9 0.36×0.25 100-15×4.6 2.04×52 9+5.29
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/05/22 05:31:10
7×101 5.5×9.8 82×0.9 0.36×0.25 100-15×4.6 2.04×52 9+5.29
应该1.7×101=1.7×(100+1)=170+1.7=171.7
5.5×9.8=5.5×(10-0.2)=55-1.1=53.9
82×0.9=82×(1-0.1)=82-8.2=73.8
0.36×0.25 =0.6×0.6×0.5×0.5=0.3×0.3=0.09
100-15×4.6=100-15×4-15×0.6=100-60-9=31
2.04×52=(2+0.04)×52=104+2.08=106.08
9+5.29 =9+5.3-0.01=14.3-0.01=14.29
432÷48=(480-48)÷48=10-1=9
5.5×9.8=5.5×(10-0.2)=55-1.1=53.9
82×0.9=82×(1-0.1)=82-8.2=73.8
0.36×0.25 =0.6×0.6×0.5×0.5=0.3×0.3=0.09
100-15×4.6=100-15×4-15×0.6=100-60-9=31
2.04×52=(2+0.04)×52=104+2.08=106.08
9+5.29 =9+5.3-0.01=14.3-0.01=14.29
432÷48=(480-48)÷48=10-1=9
7×101 5.5×9.8 82×0.9 0.36×0.25 100-15×4.6 2.04×52 9+5.29
根号0.9*121/0.36*100
1/6×7+1/7×8+1/8×9+······+1/100×101=?
根号下(0.9*121/0.36*100)
0.25×4.78 3.4×9+3.4 2.7×4.3+2.7×5.7 1.25×11×0.8 4.6×102 用简便方
三道简便计算0.65×13+89×65% 36÷11+52 (0.36+0.36+0.36+0.36)×2.5
1+3+5+7+9+...+99+101 要简便.
1.8+(-4)-5-(-0.25) 2. (-82)+72*36 3. 7×1*(-9+19) 等于几? 过程
11×12×13+12×13×14+13×14×15+……+99×100×101+100×101×102=?
(5.6×3×1.7×0.9)÷(51×0.14×4×18)=?(15\56-13\42+11\30-9\20+7\12
化简!根号下100×0.36分之0.9×121
√(0.9乘以121/0.36乘以100)怎么算?就是根号下0.36乘以100分之0.9乘以121..