Question

简便运算！！！！！！

1. 5.37x6.3+5.37x3.7 2. 8.8x1.25 3. 24.5小.4-2.3 4. 78÷4÷2.5
5. 1.2x99 6. 0.65x12÷0.13
看这里嘞·~~~~~~~~~~~~~~~~~~~~ 3. 24.5x2.4-2.3

Answer 1

1. 5.37x6.3+5.37x3.7
=5.37×(6.3+3.7)
=5.37×10
=53.7

2. 8.8x1.25
=1.1×8×1.25
=1.1×(8×1.25)
=1.1×10
=11

3. 24.5小.4-2.3 请重新写一下这题，不知你小.的意思

4. 78÷4÷2.5
=78÷(4×2.5)
=78÷10
=7.8

5. 1.2x99
=1.2×(100-1)
=120-1.2
=118.8

6. 0.65x12÷0.13
=0.65÷0.13×12
=5×12
=60

追问

大哥啊~~~~~请看看问题补充吧~~~~~ 24.5x2.4-2.3

追答

24.5x2.4-2.3
=24.5×2.4-2.4+0.1
=23.5×2.4+0.1
=56.5

Answer 2

1. 5.37x6.3+5.37x3.7 =5.37*(6.3+3.7)=5.37*10=53.7
2. 8.8x1.25 =1.1*8*1.25=1.1*10=11
3. 24.5小.4-2.3
4. 78÷4÷2.5=78×1/4÷25/10=78×1/4×10/25=780/100=7.8
5. 1.2x99=1.2*(100-1)=120-1.2=118.8
6. 0.65x12÷0.13=5×0.13×12÷0.13=5×12=60

Answer 3

1. 5.37x6.3+5.37x3.7 =5.37×（6.3+3.7）=53.7
2. 8.8x1.25=（8+0.8）×1.25=10+1=11

4. 78÷4÷2.5=78÷（2.5×4）=7.8
5. 1.2x99 =1.2×100-1.2=120-1.2=118.8
6. 0.65x12÷0.13=0.65÷0.13×12=5×12=60

Answer 4

1. 5.37x(6.3+3.7)=5.37x10=53.7 2. 8x1.25x1.1=10x1.1=11 3看不懂
4. 78÷(4x2.5)=78÷10=7.8 5. 1.2x(100-1)=1.2x100-1.2x1=120-1.2=118.8
6. 0.65÷0.13x12=5x12=60

Answer 5