72÷8=                      25×8=                 18.8-6.5=

87-64÷8=                 0÷36=                 3.6km=   m

6.054≈ （保留一位小数）                      25×4+25×3=

①28+37+72

②25×32×4

③2000÷25÷4

④（20+4）×25

⑤240+（365-65）÷60

⑥105×13

200+300=300+           4×25+2×25=×25

30×2=               24÷3=            2.3+0.7=         16×4=

234÷6≈             358÷7≈          20×50=           320÷8=

①65×43=

②47.8+6.2=

③30-23.8=

④36×45=

⑤☆624÷7=

⑥☆852÷5=