Math Is Fun Forum
Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °
You are not logged in.
- Topics: Active | Unanswered
Pages: 1
#1 2013-05-31 19:16:26
- Hostible
- Member
- Registered: 2013-05-31
- Posts: 5
Supplement Multiplication
SUPPLEMENT MULTIPLICATION
[The supplement of a number is the amount by which that number is more than 100]
Find the product of 104 x 106.
(a) Add one of the numbers to the supplement of the other number.
104 + 6 = 110 or 106 + 4 = 110
These are the first two digits of the final product.
(b) Multiply the supplements of the two numbers together. 4 x 6 = 24.
These are the last two digits of the final product.
(c) Combine the two numbers to get your answer.
106 x 104 = 11024
Offline
#2 2014-12-12 00:20:57
- DeanPemberton
- Member
- From: USA
- Registered: 2014-10-30
- Posts: 20
- Website
Re: Supplement Multiplication
Wow, it is a great formula, maths always rocks. You don't need any calculator or long calculation for multiplying two numbers which is more than 100.
Offline
Pages: 1