Answer:
2.6×10^2
3.6×10^2
Step-by-step explanation:
2.5×103=257.5
257.5= 2.575 × 10^2
257.5= 2.6 × 10^2 ( rounding off)
3.442×104= 357.968
3.442×104= 3.57968 × 10^2
3.442×104= 3.6 × 10^2 (rounding off)
Hope it helps :)
2+2. 1+1. 3+3. 5+5. 6+6. 7+7. 8+8. 9+9