MATHS 2 Marks Questions

(a) The number closest to 21,500 can be obtained as:
12,0 × 2 – 1500 – 800 – 300 = 21,400
(b) The number closest to 43,950 can be obtained as:
12,0 × 3 + 7,000 + 3 × 300 = 43,900

33 × 31 = 1023
333 × 331 = 110223
3333 × 3331 = 11102223
33333 × 33331=1111022223

7 × 2 = 14
77 × 2 = 154
777 × 2 = 1554
7777 × 2 = 15554
77777 × 2 = 155554
777777 × 2 = 1555554

In the Indian system :
(a) 47,35,108: Forty-seven lakh thirty-five thousand one hundred eight,
(b) 9,24,860: Nine lakh twenty-four thousand eight hundred sixty
In the International system :
(a) 4,735,108: Four million seven hundred thirty-five thousand one hundred eight.
(b) 924,860: Nine hundred twenty-four thousand eight hundred sixty.

7,77,777
In words : Seven lakh seventy-seven thousand seven hundred seventy-seven
Let’s count the letters :
→ Seven: 5 letters
→ Lakh: 4 letters
→ Seventy-seven: 7 + 5 = 12 letters
→ Thousand: 8 letters
→ Seven hundred: 5 + 7 = 12 letters
→ Seventy-seven: 12 letters
Total = 5 + 4+ 12 + 8 + 12+ 12 = 53 letters
So, 777777 has 53 letters.

In the Indian system: Two crore fifty-six lakh ninety- two thousand one hundred thirty-five.
In the International System: Twenty-five million six hundred ninety-two thousand one hundred thirty-five.