This is a chart where students are given whole numbers, such as 24, and asked to multiply by 0.1, 0.3, 0.5, 0.7, 0.9, 1, 1.2, 1.5, 1.8, and 2 either with a calculator or not (depending on how far you are into decimal multiplication). Afterwards, there are 7 questions asking students to make observations about the patterns or relationships they noticed once the chart is complete.
After this students should understand that when you multiply a whole number times a decimal smaller than 1, the product is smaller than the original number. When multiplying times a decimal larger than one, it is larger than the original number.
This is designed to strengthen decimal number sense! Would be good as a math center, or for guided practice and reflection.