Yes, you can use addition to solve multiplication problems!
Here are some examples:
-Let's use 5 x 2 for example. 5 x 2= 10 can be solved as 5 + 5 = 10 since you are technically adding 5 twice. -Another example would be 3 times 5. 3 x 5 = 15 can be solved by 3 + 3 + 3 +3 + 3 = 15 which is adding 3 five times. -10 times 10 = 100 : 10 + 10 + 10 + 10 + 10 + 10+ 10 + 10 + 10 +10 = 100
You would keep the 2 hour for the whole number of the mixed number and then, make the minutes (15) as a fraction with 60, and divide them both by 20. that is just for the mixed number.
