a) 1.200-207+10
=200-207+10
= -7 +10
= 3
b) 2.1000-2000+10000
=2000-2000+10000
=0+10000
=10000
1) 200 - 207 + 10 = -7 + 10
= 3
2) 1000 - 2000 + 10000 = -1000 + 10000
= 9000
200 - 207 + 10 = 3
1000 - 2000 + 10000 = 9000
Nhớ k mk nha !!!!!!!!!!
1. 200-207+10=(200-200) +(10-7)=3
2. 1000-2000+10000=9000+(2000-2000)=9000
1. 200-207+10=-7+10=3
2.1000-2000+10000=-1000+10000=9000
1 : 200 - 207 + 10 = 3
2 : 1000 - 2000 + 10000 = 9000