1. 12 + 5 -8 :4 2. 7 x4 x9 - 100 3. 15 - 50 : 25 +80 4. 30x60 : 5x4 5. 5.000:2.500 x 80 - 25 x0

1.2
2.152
3.93
4.1.440
5.160

1. 15
2. 152
3.93
4. 1440
5.160

caranya:
1. 8:4= 2
12 +5 - 2= 15

2. 7×4=28 ×9 =252 -100

3.50 : 25 =2
15-2+80= 93
4.30 ×60 =1800 :5= 360 ×4
=1440
5.5000:2500= 2×80= 160- (25×0=0)= 160