Question

Four bar models are shown.
Bar Model A

Bar Model B


Bar Model C

Bar Model D

Answer 1

I can’t see the images you’re referring to. Could you either upload them or describe each bar (how many equal parts and how many are shaded/filled)? For example: “Bar A: 3 out of 5 parts shaded,” “Bar B: 6 out of 10 shaded,” etc.

If you want to do it yourself, here’s a short checklist to identify what each bar model represents and which ones are equivalent:

1. Make sure each bar is divided into equal parts.
2. For each bar, count the total number of equal parts (denominator) and the number of shaded parts (numerator).
3. Write the fraction shaded = shaded parts / total parts.
4. Simplify the fraction (divide numerator and denominator by their GCD) or convert to a decimal to compare.
- Example: 6/10 = 3/5 because GCD(6,10)=2.
- Example: 2/4 = 1/2.
5. Bars that simplify to the same fraction (or have the same decimal) represent the same amount even if they are partitioned differently.

If you post the descriptions (or images), I’ll compute the fractions and tell you which bars are equivalent.