你好:
59.8*9.9
=(60-0.2)*(10-0.1)
=60*10-60*0.1-0.2*10+0.2*0.1
=600-6-2+0.02
=592+0.02
=592.02
4.4÷0.125÷0.8
=4.4÷(0.125*0.8)
=4.4÷0.1
=44
72*(8分之3+9分之4)
=72*3/8+72*4/9
=27+36
=63
希望对你有帮助!
你好:
59.8*9.9
=(60-0.2)*(10-0.1)
=60*10-60*0.1-0.2*10+0.2*0.1
=600-6-2+0.02
=592+0.02
=592.02
4.4÷0.125÷0.8
=4.4÷(0.125*0.8)
=4.4÷0.1
=44
72*(8分之3+9分之4)
=72*3/8+72*4/9
=27+36
=63
希望对你有帮助!