Zearn 2.11

Zearn 2.11

Learning Goal: I can multiply decimal fractions by multi-digit whole numbers through conversion to a whole number problem and reasoning about the placement of the decimal. 

Multiple Choice

27÷3=

• 9
• 6
• 3
• 4

Multiple Choice

Maggie had 21 mini cookies.  She had 3 baskets.  How many cookies can go in each basket if she divides them equally?

• 7
• 6
• 5
• 1

Multiple Choice

There were 16 cupcakes at the bakery.  4 friends bought the cupcakes and shared them equally.  How many cupcakes did each friend get? 

• 12
• 20
• 3
• 4

Multiple Choice

2,500 ÷ 5 =

• 5

• 500

• 5,000

• 2,505

Multiple Choice

2,000 ÷ 4 =

• 50

• 500

• 5,000

• 2,004

Multiple Choice

150 ÷ 5 =

• 3

• 30

• 155

• 300

Multiple Choice

150 ÷ 5 =

• 3

• 30

• 155

• 300

Solve

• 3 x 4.1 = ?

• When multiplying decimals, ignore the the decimal and put it back at the end.

3 x 4.1 = 12.3

• 12.3 × 10 ÷ 10 is …?

• does ÷ 10 have an effect?

• 3 × 4.1 × 1 is …?

3 × 2.4

• Solve

• 3 × 4 × 17.6 ÷ 17.6 is …?

Multiple Choice

4.5 x 6.2

• 2,790
• 279
• 27.9
• 2.79

Multiple Choice

1.3 x 9

• 117
• 11.7
• 1.7
• 0.117

Multiple Choice

0.35 x 6

• 210
• 21
• 2.1
• 0.21

Solve

The fifth-grade craft club is making aprons to sell. Each apron takes 1.25 yards of fabric that costs $3 per yard and 4.5 yards of trim that costs $2 per yard. What does it cost the club to make one apron? If the club wants to make $1.75 profit on each apron, how much should they charge per apron?

Multiple Choice

Joy drinks 4 bottles of water per day. Each bottle contains 16.5 fluid ounces. How many fluid ounces of water does she drink per day?

• 66 fluid ounces

• 68 fluid ounces

• 660 fluid ounces

• 680 fluid ounces

Multiple Choice

Lindy bought 8 bagels for $1.19 each. What was the total cost of the bagels?

• 8 (1.19) =

• 1.19 $\div$ 8 =

• 1.19 + 8 =

• 8 - 1.19 =

Multiple Choice

Juan bought 12 packages of popcorn for $.59 a package. What was the total cost of the popcorn?

• 12 (.59) =

• 12 $\div$ 0.59 =

• 12 - 0.59 =

• 12 + 0.59 =

Multiple Choice

A store is shipping 26 birdhouses to a park. Each birdhouse weighs 3.93kg. What is the total weight of the shipment?

• 28.93 pounds

• 31.44 pounds

• 102.18 pounds

• 102.48 pounds

Multiple Choice

Jacob bought 5 bottles of orange juice at a market. Each bottle cost $2.43. How much did the orange juice cost all together?

• $7.43

• $10.05

• $12.15

• $20.05

Solve

Mr. Mohr wants to build a rectangular patio using concrete tiles that are 12 square inches. The patio will measure 13.5 feet by 43 feet. What is the area of the patio? How many concrete tiles will he need to complete the patio?

Multiple Choice

Grace saw 328 butterflies at the conservatory. Bailey saw 3 times as much as Grace. How many butterflies did Bailey see?

• 940

• 984

• 624

• 684

Multiple Choice

While camping last week, Kenny got 56 mosquito bites.  This is 8 times as many as Scott got.  How many mosquito bites did Scott get?

• 8
• 7
• 448
• 392

7.38 × 41

• Say It

• Estimate

• Calculate using area model

• Solve.

Multiple Choice

7.38 x 41

• 302.58

• 400

• 280

• 490

Multiple Choice

8.56 x 32

• 273.92

• 2

• 250

• 600

Multiple Choice

6.27 x 21

• 120

• 131.67

• 18

• 400

8.26 × 128

• Say It

• Estimate

• Calculate

• Solve

Multiple Choice

8.26 x 128

• 1,057.28

• 800

• 40

• 8,000

Multiple Choice

9.36 x 100

• 936

• 1,000

• 900

• 36

Multiple Choice

3.24 x 200

• 648

• 324

• 100

• 50

82.51 × 63

• Say it

• Estimate

• Calculate

• Solve

Multiple Choice

82.51x63=

• 5198.13

• 4800

• 80

• 9600

Multiple Choice

44 x 2 =

• 12

• 7

• 160

• 88

Multiple Choice

64 x 20

• 128

• 4

• 120

• 360

Multiple Choice

Representations

What multiplication expression does the model show?

• 5 × 0.4

• 5 × 0.6

• 16 × 0.05

• 5 × 0.16

Multiple Choice

2 x .7 =

• 14
• .14
• 1.4
• .014

Multiple Choice

5 x .03 =

• .15
• .015
• 15
• 1.5

Multiple Choice

5 x .3 =

• 15
• .15
• 1.5
• 150