It means you double 7. So 7 * 2 = 14
The answer is 42. 14 + 7 = 21 21 x 2 = 42
Double the last digit and subtract the last digit from the remaining digits.
6+7
7: If you double the last digit and subtract it from the rest of the number and the answer is: 0 or Divisible by 7 (Note: you can apply this rule to that answer again if you want)Example: 1, 672 (Double 2 is 4, 67-4=63, and 63÷7=9) Yes2, 905 (Double 5 is 10, 90-10=80, and 80÷7=11 3/7) No8: The last three digits are divisible by 8Example: 1,109816 (816÷8=102) Yes 2,216302 (302÷8=37 3/4) No
-(-7)=7
28?
What is a multiplication fact that can you double to find 4Γ7
7 x 2 = 14
On Nov 7 2007 it was Double Vision The answer for Nov 7 2007 was DOUBLE VISION
Starting with the numeral 7, triple it. Double the answer. Triple that answer. Double that answer . . . . .
2x + 7
Double Espresso - 2010 Found Dead 1-7 was released on: USA: 7 November 2010
It means you double 7. So 7 * 2 = 14
since 4 is 2 times 2 just double 7 twice: 7 doubled = 14 and then 14 double = 28
x2+7
That, my friend would be 98 (if i read your question correctly)