我太累了( ⊙ o ⊙
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/08/26 04:11:05
我太累了( ⊙ o ⊙
数的运算
脱式计算
(1)0.73×2+0.7÷0.7
(2)3分之1×20分之9÷(1+2分之1)
(3)4.8×(4.8-24÷5)
(4)31.25÷4分之1×0.25
过程要一步一步的,如:
21+43+11
=64+11
=75
醉不倒的酒葫芦
你写的符号我看不懂
数的运算
脱式计算
(1)0.73×2+0.7÷0.7
(2)3分之1×20分之9÷(1+2分之1)
(3)4.8×(4.8-24÷5)
(4)31.25÷4分之1×0.25
过程要一步一步的,如:
21+43+11
=64+11
=75
醉不倒的酒葫芦
你写的符号我看不懂
(1)0.73×2+0.7÷0.7
= 1.46+1
= 2.46
(2) 3分之1×20分之9÷(1+2分之1)
=(1/3)×(9/20)÷(3/2)
=(1/3)×(9/20)×(2/3)
=(3/20)×(2/3)
=1/10
(3) 4.8×(4.8-24÷5)
=4.8×(4.8-4.8)
=4.8×0
=0
(4)31.25÷4分之1×0.25
= 31.25×4×0.25
=31.25×(4×0.25)
=31.25×1
=31.25
= 1.46+1
= 2.46
(2) 3分之1×20分之9÷(1+2分之1)
=(1/3)×(9/20)÷(3/2)
=(1/3)×(9/20)×(2/3)
=(3/20)×(2/3)
=1/10
(3) 4.8×(4.8-24÷5)
=4.8×(4.8-4.8)
=4.8×0
=0
(4)31.25÷4分之1×0.25
= 31.25×4×0.25
=31.25×(4×0.25)
=31.25×1
=31.25