Multiply decimals by 10: move the point
for 2nd grade
Connect multiplying a decimal by 10 with place value by moving the point 1 to the right
Multiplying decimal numbers by 10
Multiplying a unit by 10 moves it in to the tens column. Multiplying a ten by 10 moves it in to the hundreds column. Something similar happens when you multiply a decimal number by 10. The unit number is shifted 1 place to the left into the tens column, so the decimal point moves 1 place to the right.
So if the original number is 3.3, the unit 3 becomes 3 tens, the 0.3 becomes the unit 3, and so the answer is 33, which, as you can see, is the same as moving the decimal point 1 place to the right!
It doesn't matter how many numbers are in front of or behind the decimal point, you can still simply move that decimal point 1 place to the right. So 123.456 x 10 is 1234.56 and 0.001 x 10 is 0.01 - it is a really easy rule for multiplying by 10.
Below is a table showing the first 7 question answer pairs for the topic "Multiply decimals by 10: move the point" as used in the lessons for this topic. Our games and tests for the topic use these 7 items plus 9 additional question answer pairs.
The topic "Multiply decimals by 10: move the point" is in the category Multiplication for 2nd grade (ages 7 to 8).
Revise 'Multiply decimals by 10: move the point' with one of our games for 2nd grade
Each of our math topics for elementary are made up of between 6 and 20 question and answer pairs (both the written form and a robot voice speaking those questions and answers). Each topic can be used with all the activities on the site.
Counting * Comparing numbers * Pattern * Place value * Addition * Subtraction * Add + Subtract * Multiplication * Division * Multiply + Divide * Fractions * Measurements * Shapes * Position + Direction * Statistics * Algebra *
