tolong di jawab yaa Dengan caranya juga... :)

1 315 + (-273) = B.42
2 A.59
3 682 + 315 = 997 ditaksirkan menjadi
B.1000
4 D.7900
5 B.16
6 A.54
7 56 = 2^3 × 7
120 = 2^3 × 3 × 5
KPK = 2^3 × 3 × 5 × 7
= 840
8 58.851 -19.024 = 39.827 Ditaksirkan menjadi B.39.800
9 58 × 124 = 7,192 ditaksirkan C.7,200
10 36 = 2^2 × 3^2
54 = 2 × 3^3
FPB = 2 × 3^2 = B.18
11 342 = A.2 × 3^2 × 19
12 60 = 2^2 × 3 × 5
84 = 2^2 × 3 × 7
KPK =2^2 × 3 × 5 × 7
= 420
FPB = 2^2 × 5 = 20