Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to use your fingers to do the 9s times tables [title] Understand that you cannot use this finger trick on numbers larger than 10. [step] The finger trick will allow you to calculate the times table from 9 x 1 to 9 x 10. Multiplying 9 by any larger number cannot be done using the finger trick.

Ending1: You must start from 10 x 11 as shown in the picture below. [title] Add 8 and 10 together to get 9 1/2. Ending2: The finger trick also cannot be used to multiply 9 by fractions or any other number that is not an integer. [substeps] If you need to multiply 9 by any larger number, you can calculate the problem using a pencil and paper or use a calculator to solve the problem for you. Ending3: [title] Write the appropriate numbers out on a small piece of paper. [step] You can even make a pile in the center of your table. Ending4: The numbers set in the decimal order " x " are not considered to represent the times table, therefore. This trick works with numbers a and b, therefore they are not accepted.

Answer format: ending1/ending2/ending3/ending4