5×9×(-)
×(+)×
3.6×(-)
×+×
88×
×34×7× 5×(-)×9 ×+×
101×- ×48 (++)×1.2
① ②
③ ④
改正:
①101×32
②2.74+8.67+7.26+11.33
③18.8﹣5.8﹣﹣4.2﹣
④×+÷
⑤0.888×125×73+999×3
⑥4﹣[3.75×(1.2﹣)+]
①273﹣73﹣27
②1.25×9.78×80
③()×24
④[1﹣()]÷
①6.4×2.5×1.25
②8.5×98%
③÷4+×
④×