## Lesson: Operations With Decimals

Developing the Concept

Many problem-solving situations involve operations with decimals. Now that your students have reviewed operations with decimals, it's time for them to practice their skills.

**Wrap-Up and Assessment Hints**

Mental math exercises are helpful in strengthening students' skills with decimals. Ask students to tell how many decimal places are the product of pairs of decimals, for example, 0.6 x 0.75 (3 places), 0.05 x 0.09 (4 places).

You can also give students a decimal and ask by what power of ten they should multiply to make it a whole number, for example, decimal: 1.7 (multiply by 10), decimal: 0.08 (multiply by 100), decimal: 0.043 (multiply by 1,000).

Students who have difficulty writing multiplication and division problems neatly and aligned will benefit from writing their solutions on graph paper. You can easily see any problems they are having by checking the alignment of their numbers on the graph paper.