①(6.56×4.6-8.2-1.8)÷0.01
②6.8÷(25×0.34)
③10.1×8.8
④3.5×6.5+6.5×6.5
⑤78.6-1.8×(7-0.5)
⑥9.2÷2.5
+0.375= 2.5×(17×4)= 631÷89≈
0.32= ×÷×=
= ﹣0.25= 0÷5=
= 5.4×= 80×0.7=