The arrow way helps you visualize moving backward from a mixed number to subtract the fractional part. : Step A : Start at Step B : Subtract 2122 over 12 end-fraction first to get to the whole number Step C : Since you need to subtract 9129 over 12 end-fraction in total, and you already subtracted 2122 over 12 end-fraction , you still need to subtract 7127 over 12 end-fraction Step D : Subtract the remaining 7127 over 12 end-fraction 2. Subtract Using Decomposition
Add and subtract mixed numbers (like fractional units) – finding common denominators when needed. lesson 32 homework 4.5
Decomposition involves breaking the mixed number into a whole number and a smaller mixed number to make subtraction easier. , decompose Subtract the fraction from the Add the result back to the remaining part: 3. Decompose the Subtrahend The arrow way helps you visualize moving backward