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Lesson 5: Multiplying Decimals — Practice Questions

  1. 1. Which multiplication problem is modeled by shading 8 columns and 5 rows on a hundredths grid to find the area of the overlapping region?

    • A. $8 \times 5$
    • B. $0.8 \times 0.5$
    • C. $0.08 \times 0.05$
    • D. $80 \times 50$
  2. 2. When modeling $0.7 \times 0.2$ on a hundredths grid, an overlapping region is formed by shading 7 columns and 2 rows. This region covers 14 squares. What is the product? ___

  3. 3. Using base ten blocks, the product of $4 \times 0.2$ is modeled by creating 4 groups, where each group has 2 tenths blocks. What is the total value represented by these blocks? ___

  4. 4. To model $3 \times 0.14$ using base ten blocks, you start with 3 tenths and 12 hundredths. After regrouping the 12 hundredths into tenths and hundredths, what is the final product? ___

  5. 5. Which statement correctly describes how to model the product of $2 \times 0.3$ using base ten blocks?

    • A. Shade 2 rows and 3 columns on a hundredths grid.
    • B. Create 2 groups, with each group containing 3 tenths blocks.
    • C. Create 3 groups, with each group containing 2 hundredths blocks.
    • D. Combine one block of 2 tenths and one block of 3 tenths.
  6. 6. To model the multiplication $0.6 \times 0.5$ on a hundredths grid, you shade 6 columns and 5 rows. The overlapping area represents the product. What is this product? ___

  7. 7. A model on a hundredths grid shows 8 shaded columns and 4 shaded rows. Which multiplication expression does the overlapping region represent?

    • A. $0.8 \times 0.4$
    • B. $8 + 4$
    • C. $0.8 + 0.4$
    • D. $8 \times 4$
  8. 8. A model of $0.4 \times 3$ is created using base ten blocks. This is shown as 3 groups, each containing 4 tenths blocks. What is the total value of the blocks? ___

  9. 9. When using a hundredths grid to multiply two decimals like $0.2$ and $0.9$, what does the product correspond to?

    • A. The total number of squares in the grid
    • B. The area of the overlapping shaded regions
    • C. The number of unshaded squares
    • D. The sum of the lengths of the shaded rows and columns
  10. 10. To model $0.12 \times 4$ with base ten blocks, you make 4 groups. Each group has 1 tenth block and 2 hundredths blocks. What is the final product? ___