Table of Contents
What happens when you multiply a 2 digit number by 10?
And as we’ve multiplied it by 10, each digit’s value has become 10 times as large and has shifted one place to the left. We’ve used our knowledge of how digits change when we multiply a number by 10 to help find the missing factor. 10 times 12 equals 120.
What is the probability that 2 digit number selected at random will be a multiple of 3 and not a multiple of 5?
Probability that a two-digit number is a multiple of 3 and not a multiple of 5 = 30-6 = 2490= 415. Find the probability that a number selected at random from the numbers 1, 2, 3., 34 , 35 is (a) a prime number, (b) a multiple of 7, (c) a multiple of 3 or 5.
What is the probability that a given 2 digit number is divisible by 15?
∴ The probability of getting a number divisible by 15 = 115 .
How do you multiply a number by 10?
To multiply any number by 10, just tag ONE zero on the end. To multiply any number by 100, just tag TWO zeros on the end. To multiply any number by 1,000, just tag THREE zeros on the end. Note especially what happens when the number you multiply already ends in a zero or zeros.
What is the probability that a randomly chosen 2 digit number is divisible by 3?
Thus there are 90 such numbers. Since out of these 30 numbers are multiple of 3 therefore the probability that a randomly chosen positive 2-digit integer is a multiple of 3 is 30/90 = 1/3.
When multiplying by 10 What is the rule?
Lesson Summary When multiplying whole numbers by 10, simply add a 0 to the end of the number. When multiplying decimals by 10, move the decimal point one space to the right.
What is the probability that a randomly chosen two digit positive integer is a?
(b) 2-digit positive integers are 10, 11, 12, , 99. Thus, there are 90 such numbers. Since out of these, 30 numbers are multiple of 3, therefore, the probability that a randomly chosen positive 2-digit integer is a multiple of 3, is 30/90 = 1/3.
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