Correct Answer - Option 1 : 800
Concept used:
1 thousand = 1000
1 hundred = 100
1 tens = 10
Calculation:
79 thousand + 19 hundred - 90 tens = (_____) hundred
Let x will come in place of blank space.
⇒ 79 × 1000 + 19 × 100 - 90 × 10 = x × 100
⇒ 79000 + 1900 - 900 = 100x
⇒ 100x = 80900 - 900
⇒ 100x = 80000
⇒ x = 80000/100 = 800
∴ 800 come in place of blank space.