2.38+0.77+2.62
① - +
② -( + )
③ - -
④ -( - )
⑤
⑥4.85- +5.15-
8.6+14.4= 10-0.16= 100×0.205= 0.3÷100=
101×11= 1-0.99= 2.15+0.9= 9×29+9=
0×0.27÷10= 17.2-5.8-4.2=
①
②
③
④
⑤0125×41×80
⑥22.7-1.8+17.3-18.2