(从百分位、十分位到百位依次填写)
+ =
0.25+0.75=
4505÷5= 24.3-8.87-0.13=
①4.7+16.48+5.3+3.52
②56.8-27.4-12.6
③8900÷25÷4
④138×56-56×38
⑤78×99+78