①(610+290)×6
②(100-53)×2
③948-48÷8
④485+119+208
⑤1000-387-209
⑥963-23×4
①0.25×16.2×4
②375+450÷18×25
③35.6- +34.4-
④ × + ÷
⑤[( - )× ]÷
⑥3.5× +5.5×80%+0.8
①54×98
②(+﹣)×24
③4.86×[1÷(2.1﹣2.09)]
④8﹣