100 plus 21 is equal to 121. This is a basic addition operation where you are combining the two numbers together to find the total sum. In mathematics, addition is a fundamental arithmetic operation that represents combining two or more numbers to get a total quantity.
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79 + 21 = 100 365 x 100 = 36,500 or the long way is > 365 x 79 = 28,835 365 x 21 = 7,665 28,835 + 7,665 = 35,000 + 1,400 + 100 = 36,500
6 + 3 + 21 + 63 + 21 = 114
108 remainder 3 :D
100/52 + 7*3 = 100/25 + 7*3 = 4 + 21 = 25
55 + 34 + 31 + 27 + 21 + 21 + 20 + 17 + 15 + 15 = 256