Support 10: 650B1
Report a proble
Question Number 13
The product of the digits in the number 236, is 2*3*6 = 36. How many three digit numbers have a
product that is equal to 36?
O 9
O 12
O 15
O 21
UNANSWER
NEXT
END TEST
Answers
Answer:The expanded form of a 3-digit number can be expressed and written in three different ways. Consider a three-digit number 457. The number 457 can be written in one form as 457 = 4 × hundreds + 5 × tens + 7 × ones. In the second way, the number 457 can be written as 457 = 4 × 100 + 5 × 10 + 7 × 1. And finally the number 457 can be expanded in the form as 457 = 400 + 50 + 7. All the three ways of writing numbers in the expanded form are correct. Writing a 3-digit number in the expanded form helps to know the constituents of the number.
Basically splitting or expanding a 3-digit number helps us to understand more about the 3-digit number. By splitting we know the number of hundred's, ten's, and units available in the 3-digit number.
Let us look at some of the below mentioned important points relating to 3-digit numbers. These help in a better understanding of 3-digit numbers.
100 is the smallest 3-digit number and 999 is the greatest 3-digit number.
A 3-digit number cannot start with 0.
10 tens make 1 hundred which is the smallest 3-digit number and 10 hundred make a thousand which is the smallest 4-digit number.
A 3-digit number can also have two zero's. The two zero's should be in the ten's place and the unit's place. Some of the examples of 3 digit numbers is 100, 200, 300, 400. The only necessary condition is that the zero's cannot be in the hundredth place.
Common Mistakes of Numbers up to 3-Digits
Some of the common mistakes are observed while writing or reading a 3-digit number. These mistake in reading and interpreting a 3-digit number is often understood as some other number. In the process of reading, writing, and interpreting a 3-digit number, the place value of the digits should be rightly interpreted. Here we have listed below the three common mistakes often committed by children in writing three-digit numbers.
Misconception 1: Children make mistakes identifying numbers when there is a zero in the unit’s place or tens place. Example: When asked to read 130 and 103, students may get confused. It helps them to model the numbers through Base-10 blocks. That way they can see the ten’s and one’s place value explicitly.
Misconception 2: When asked to write “one hundred twenty-three," students often write 100 first and then attach 23 to it thus ending up with the number “10023” Fact: This misconception arises due to a superficial understanding of place values. Using the base-10 blocks or abacus show children that a digit has different values based on its position.
Misconception 3: Sometimes when asked to form the smallest 3-digit number given three digits that include zero, children place the zero in the left-most position. Fact: This is incorrect. Zero cannot be in the hundreds place if we are creating a 3-digit number. For example: the smallest 3-digit number using all digits of 5, 0, and 7 is 507 and not 057
Explanation:
Answer:
the answer is _____________12