Q:

What's 4/5 0f 40? thanks for everyones help

Accepted Solution

A:
Answer:32Step-by-step explanation:In your head: 1/5 of 40 is 8 (since you know 5×8 = 40). Then 4 times that is 32 (since you know 4×8 = 32).Your calculator can do this, too.(4/5)·40 = 32_____In decimal, it is 0.8 · 40 = 8·4 = 32. Some folks are taught to do this sort of multiplication by taking a factor of 10 from one number and applying it to the other number. That is ...... 0.8 × (10 × 4) = (0.8 ×10) × 4... = 8 × 4 = 32You can do substantially the same thing with the fraction.... (4/5) × (5 × 8) = (4/5 × 5) × 8... = 4 × 8 = 32