For example rather than remembering that 8 9 17 students can use double facts to come up with the answer. The reason teachers use double facts to teach students is because they provide a faster way to find the answer to addition problems that are not as easy to memorize.
8 x 8 64.
Here is another example which looks a little tricky at first. But after using the half and double method it becomes. 4 4 8 4×5 20 4×5 20 20 20 40 hope this helps.
Break the seven into to numbers 3 and 4 because 3 4 7 mulitply both of these numbers by 3 3×3 9 4×3 12 then add together the products of the two numbers 12 9 21 example for 8×5. What two multiplication facts can be added to find 3×7. Find an answer to your question what two facts can you double to find 8×4 explain in mathematics if you re in doubt about the correctness of the answers or there s no answer then try to use the smart search and find answers to the similar questions.
In this case a student would know that the double fact of eight. Using the halving and doubling method we can halve one side of the multiplication as long as we double the other and the answer remains the same. You multiply too find the answer and 8 x4 is 32 two facs.
What two facts can you double to find 8×4. 34 x 5. We know that 8 times 4 32 32 2 times 2 times 8 hence the answer is 8.
Get an answer to your question what two facts you double to find 8×4. Please use only default html tags. Jan 26 2016 10 20 42 pm reply.
Now we are here asked to find two facts that we can double to find 8 times 4. Explain in mathematics if there is no answer or all answers are wrong use a search bar and try to find the answer among similar questions. So 4 x 16.