1. **State the problem:** We need to compare the decimals 2.36, 2.403, 2.6, and 2.402 to the decimal shown in the diagram, which is approximately 2.40. 2. **Understand the diagram value:** The diagram shows 2 full squares (each 1.00) and 40 smaller squares shaded out of 100 in the third square, so the decimal is: $$2 + 0.40 = 2.40$$ 3. **Compare each decimal to 2.40:** - 2.36 is less than 2.40 because $2.36 < 2.40$ - 2.403 is greater than 2.40 because $2.403 > 2.40$ - 2.6 is greater than 2.40 because $2.6 > 2.40$ - 2.402 is greater than 2.40 because $2.402 > 2.40$ 4. **Conclusion:** The only decimal less than the one shown in the diagram (2.40) is **2.36**. **Final answer:** 2.36