1)13 440:32:7+7×123=921
1.13440:32=420
2.420:7=60
3.123*7=861
4.861+60=921
2) 8 573-4 422:2-1567=4794
1.4422:2=2211
2.8572-2211=6361
3.6363-1567=4794
3)7 924-5832:2-3822=1186
1.5832:2=2916
2.7924-2916=5008
3.5008-3822=1186
4)509×603-999 999:11+3982=31591
509*603＝320670
999999:11＝999
3982+999＝4881
320670-4881＝31591
5)(12789-8845):4+26922=27908
1. 12789-8845=3944
2. 3944:4=986
3. 986+26922=27908
