: Breaking down a mixed number or the fraction being subtracted to simplify the problem. Visual Modeling
When the fraction part of the mixed number is smaller than the fraction being subtracted. Tape Diagrams: Visual representations to aid understanding. lesson 32 homework 4.5
3/4 + 2/4 = 5/4
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 : Breaking down a mixed number or the