1. 3.26×4.5+5.2×3.26+9.7×6.74=3.26(4.5+5.2)+9.7×6.74=9.7*(3.26+6.74)=9.7*10=97
2. 15.8×5.8+4.2×4.2+11.6×4.2=15.8×5.8+(4.2+11.6)×4.2=15.8×5.8+15.8×4.2=15.8*10=158
3. 3/8*(1/5+4/5)=3/8
4.(5.1+4.8)/30=0.33
5. 4.4*4/3-1.4*4/3=4
6. 4+18/41+23/41=5
1. 3.26×4.5+5.2×3.26+9.7×6.74=3.26(4.5+5.2)+9.7×6.74=9.7*(3.26+6.74)=9.7*10=97
2. 15.8×5.8+4.2×4.2+11.6×4.2=15.8×5.8+(4.2+11.6)×4.2=15.8×5.8+15.8×4.2=15.8*10=158
3. 3/8*(1/5+4/5)=3/8
4.(5.1+4.8)/30=0.33
5. 4.4*4/3-1.4*4/3=4
6. 4+18/41+23/41=5