①
②
③
①+-
②++
③7--
④6-(-)
⑤+--
⑥+++
÷ ÷
×100
× ÷
①8×2.5×0.125÷
②(+﹣)×24
③6.5÷×
④(+)×+
⑤4×(﹣)×9
⑥÷7+×
①1.25×3.2×2.5
②×[0.75﹣()]
③×()
④2022×
⑤55×102+646÷38