Relate decimal and fraction multiplication12-9-14

GoalI can relate decimal and fraction multiplication.

AgendaFluency: Multiply Fractions, Write fractions as decimals, and Multiply whole numbers by decimals.

Application ProblemWhole groupProblem SetExit Ticket

Multiply Fractions2/5 x 2/3 =2/3 x 3/2 =1/5 x 2/3 =2/5 x 5/8=3/8 x 2/3 =3/5 x 5/7=¾ x 2/6=

Write Fractions as Decimals2/100 =8/10 =12/100=7/10=45/100=25/100

Multiply whole numbers by decimals2 x 0.1=7 x 0.01=83 x 0.1=53 x 0.1=64 x 0.01=

Application ProblemMs. Winters grades 4 tests during her lunch. She grades 1/3 of the remainder after school. If she still has 16 tests to grade after school, how many tests are there?

0.1 x 4Read this expression using the word of.Can we write this as a multiplication sentence using a fraction?

Let’s use a place value chart to show our thinking.

0.01 x 6Use a place value chart to solve the expression.

Check with a calculator

0.1 x 0.1Write this as a fraction multiplication sentence and solve it with a partner.

Let’s draw an area model to solve. Check with a calculator.

0.5 x 0.01

7 x 0.2

0.7 x 0.2 0.07 x 0.2Try both of these on your own!Check with a calculator.

Problem SetYou will have 15 minutes to complete this assignment independently.

I will have small groups at my grey table. If you have a question ask someone at your table group.

I will get to you as soon as I can.

Exit TicketYou will have 10 minutes to complete this independently.

There are only 4 problems and we have done this together!

Do your best

GoalWhat did we learn how to do today?