1. \((3\times 4)\times 10^{3+4}=12\times10^7\)
2. \((5.1\times 4.2)\times 10^{2+3}=2.142\times10^5\)
3. \(\dfrac{5.925}{2.45}\times 10^{3-(-4)}=2.5\times10^7\)
4. \(\dfrac{6.2}{5}\times 10^{3-5}=1.24\times10^{-2}\)
1. \((3\times 4)\times 10^{3+4}=12\times10^7\)
2. \((5.1\times 4.2)\times 10^{2+3}=2.142\times10^5\)
3. \(\dfrac{5.925}{2.45}\times 10^{3-(-4)}=2.5\times10^7\)
4. \(\dfrac{6.2}{5}\times 10^{3-5}=1.24\times10^{-2}\)