简便计算:(1)3.4×7.8÷3.9(2)85÷0.17÷5(3)0.125×(2.4+0.8)×2.5(4)9.9×9.9(5)17.3×9.9+1.73(6)8.5×96+34(7)1.1+2.1+3.1+4.1+5.1(8)99.9×999+99.9×2(9)(4.5×7.5×4.8)÷(1.5×2.5×2.4)(10)3÷4×6
来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/16 05:51:52
简便计算:(1)3.4×7.8÷3.9(2)85÷0.17÷5(3)0.125×(2.4+0.8)×2.5(4)9.9×9.9(5)17.3×9.9+1.73(6)8.5×96+34(7)1.1+2.1+3.1+4.1+5.1(8)99.9×999+99.9×2(9)(4.5×7.5×4.8)÷(1.5×2.5×2.4)(10)3÷4×6
简便计算:
(1)3.4×7.8÷3.9
(2)85÷0.17÷5
(3)0.125×(2.4+0.8)×2.5
(4)9.9×9.9
(5)17.3×9.9+1.73
(6)8.5×96+34
(7)1.1+2.1+3.1+4.1+5.1
(8)99.9×999+99.9×2
(9)(4.5×7.5×4.8)÷(1.5×2.5×2.4)
(10)3÷4×66+3÷4×34
答得好的加悬赏!注意是简便计算!
简便计算:(1)3.4×7.8÷3.9(2)85÷0.17÷5(3)0.125×(2.4+0.8)×2.5(4)9.9×9.9(5)17.3×9.9+1.73(6)8.5×96+34(7)1.1+2.1+3.1+4.1+5.1(8)99.9×999+99.9×2(9)(4.5×7.5×4.8)÷(1.5×2.5×2.4)(10)3÷4×6
(1)( 7.8/3.9)*3.4=2*3.4=6.8
(2) (85/5)/0.17=17/0.17=0.01
(3) (0.125*2.4+0.125*0.8)*2.5= (0.3+0.1)*2.5=0.4*2.5=1
(4) (10-0.1)*9.9=10*9.9-0.1*9.9=99-0.99=98.01
(5) 17.3*(10-0.1)+1.73=10*17.3-17.3*0.1+1.73=173
(6) 8.5*(100-4)+34=100*8.5-8.5*4+34=850
(7) (1+0.1)+(2+0.1)+(3+0.1)+(4+0.1)+(5+0.1)=(1+2+3+4+5)+5*0.1=15.5
(8) 99.9*(999+1+1)=99.9*(1000+1)=99.9*1000+99.9=99900+99.9=99999.9
(9)(3*1.5*3*2.5*2*2.4)/(1.5*2.5*2.4)=3*3*2=18
(10)(3/4)*(66+34)=(3/4)*100=75
*乘 /除
1. =3.4×(7.8÷3.9 )=3.4×2=6.8
2. =85÷5÷0.17=17÷0.17=100
3. =0.125×8×(0.3+0.1)×2.5=1×0.4×2.5=1
4. =(10-0.1)×(10-0.1)=100-2+0.01=98.01
5. =17.3×(9.9+0.1)=17.3×10=173
6. =8.5×96+8.5×4=...
全部展开
1. =3.4×(7.8÷3.9 )=3.4×2=6.8
2. =85÷5÷0.17=17÷0.17=100
3. =0.125×8×(0.3+0.1)×2.5=1×0.4×2.5=1
4. =(10-0.1)×(10-0.1)=100-2+0.01=98.01
5. =17.3×(9.9+0.1)=17.3×10=173
6. =8.5×96+8.5×4=8.5×100=850
7. =1+2+3+4+5+0.1×5=15.5
8. =99.9×1000+99.9×1=99999.9
9. =(4.5÷1.5)*(7.5÷2.5)*(4.8÷2.4)=3*3*2=12
10. =3÷4*(66+34)=3÷4*100=3*(100÷4)=3*25=75
收起
×