jawab semua ya nanti saya tambahin poinnya klo lengkap.

1. 23+(-50)-(-40)
= 23-50+40
=67

2. 2500-800-500-700= 500

3. 200-100:4x5+5
=200-25x5+5
=200-75+5
=120

4.
[tex]20 ^{2} - \sqrt{12100} [/tex]
= 400+110
= 510

5. 15.600/12=1.300

6. 3 sisir pisang x rp.8.000= 24.000
44.000-24.000=20.000

harga 1 kg rambutan
=20.000/5
=4.000

7. luas = s xs
luas = 100 x 100 =10.000m2

8. 123+456+321 = ..... +777
900=.....+777
900= 123+777