How to calculate 3.8 * 2 + 3.8 * 99
3.8*(1+99)+3.8*1=383.8
(emergency help) 9.8 + 99.8 + 0.2 * 3? (simple calculation required)
=(10-0.2)+(100-0.2)+0.6
=110-0.4+0.6
=110+0.2
=110.2
Simple calculation 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 +99
1+2+3+4+5+6+7+8…… +99=(1+99)x99÷2=4950
Simple calculation of 25.8 + 25.8 × 99
2580