①985-499+108 =985-607 =378 ( ) 改正: ②620-(320+186) =300+186 =486 ( ) 改正:
4×109-132 850-236+119 867-(172+198)
32×3= 34+8= 23+69= 92-6=
55-15= 700×6= 50×8= 64+18=
①56÷(18-11)
②49+ 36÷9
③(99-78)÷3
④361-(137+168)
⑤700-286- 214
⑥165+ 135+166
⑦32+16÷ 8