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When multiplying or dividing by a power of 10 what is the shortcut?
Wiki User
∙ 13y ago
Move the decimal point, the same number of places as the power of 10.
That way ---> to multiply. This way <--- to divide.
Wiki User
∙ 13y ago
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How is multiplying by 10 and dividing by 2 the same as multiplying by 5?
because there the same
Why does multiplying numbers by 10 move the decimal to the right but multiplying numbers By .10 you move the decimal to the left?
0.10 = 1/10 so that multiplying by 0.10 is the same as dividing by 10.
Explain why shifting the decimal point in a number is equivalent to multiplying or dividing a number by a power of ten?
Because the decimal system is based on 10 ("decem" = 10 )
What is 10 to the fourth power multiplied by 10 to the seventh power?
10^4 * 10^7 = 10^11 When multiplying exponents with the same base (in this case, 10), you add the exponents (4+7). If you were dividing, you'd subtract the exponents.
Why does multiplying numbers by 10 move the decimal point to the right but multiplying by .10 move the decimal point to the let?
1
Is dividing by 100 the same as multiplying by 0.1?
10
How is multiplying by 10 and dividing by 2 the same as multiplying by 5?
because there the same
Why Multiplying by 0.1 would be the same as dividing by 10?
x * 0,1 = x/10 This is given. x*0,1 = 0,1x This is calculated. x/10 = 0,1x This is calculated. 0,1x = 0,1x Evicence is stated, task solved. Multiplying with 0,1 is the same as saying multiplying with 1/10. Multiplying with 1/10 is the same as dividing with 10.
Why does multiplying numbers by 10 move the decimal to the right but multiplying numbers By .10 you move the decimal to the left?
0.10 = 1/10 so that multiplying by 0.10 is the same as dividing by 10.
Explain why shifting the decimal point in a number is equivalent to multiplying or dividing a number by a power of ten?
Because the decimal system is based on 10 ("decem" = 10 )
What is 10 to the fourth power multiplied by 10 to the seventh power?
10^4 * 10^7 = 10^11 When multiplying exponents with the same base (in this case, 10), you add the exponents (4+7). If you were dividing, you'd subtract the exponents.
How do you turn 4.9 to a fraction?
4.9 = 49/10. We can transform it into fraction by multiplying and dividing by 10.
How do you improve mean corpuscular hemoglobin concentration?
by dividing the hemoglobin in grams per deciliter by the hematocrit, then multiplying by 100
Why does multiplying numbers by 10 move the decimal point to the right but multiplying by .10 move the decimal point to the let?
1
What is the similarity between multiplying by 10 and dividing by 0.1?
Since 0.1 is the reciprocal of 10, the two operations are the same.
What is the shortcut for dividing a number by a multiple of 10?
The multiple of ten can be reduced to the smaller number by moving the decimal place of the numerator one place to the left. However, this may only be a marginal short cut. For example, dividing 1256 by 3450 is equivalent to dividing 125.6 by 345 but that is hardly a shortcut!
What percent of 10 dollars is 3.20?
$3.20 is 32% of $10. This is found simply by dividing 10 by 3.2 and multiplying that by 100 to get the percent value.
