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Estimating sums and differences with decimals

Multiple Step Prob.

Adding and Subtracting

decimals

Scientific Notation

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1

Row 1, Col 1

If you were estimating, what is the answer for the question

14.8+5.1=?

20.0

1,2

Lucy got 2 child tickets for her and her friend for $5 each.

Her parents got tickets 3 times as much as the kids price for one ticket.

How much money was the parents tickets for both of them?

$30

1,3

What is 44.8+14.0=?

58.8

1,4

Write 40,100 in Scientific Notation

4.01x104

2,1

Estimate the answer of 7.99-4.99

3.00

2,2

Chelsea and Payton made 3 cupycakes.They each got one. They needed to give the other one away ,but not to Mr. Angell because he was being a meaner! They couldn’t decide between Lauren, Faith, Lexi, Kelsey, Rachel,and Brady. How many more did they have to make if they wanted to give one to everyone?

7 cupycakes

2,3

432.9-31.8=?

401.1

2,4

Write 0.000000945 in Scientific Notation

9.45x10 -7

3,1

Estimate the answer of 13.56-2.57=?

11.0

3,2

Jamarcus and Travis went to Wal-Greens and bought 8 packets of silly bands each that were heart shaped. Each packet had 14 silly bands. Each boy gave their grandma 4 silly bands. How many total silly bands did they both have left altogether

104 silly bands

3,3

78.8+444.2=?

523.0

3,4

Write 543,000,000,000 in Scientific Notation

5.53x1012

4,1

Estimate the answer of 27.488+7.7=?

35

4,2

Ke$ha bought 3 hot pink and black dresses. The first one costed 60.50.

The 2nd one costed half as much as the first. The last one costed 3 times the amount as the second dress.

How much money did she spend on her 3rd dress?

$90.75

4,3

856.78+23.76=?

883.02

4,4

Write this 230,509,000 in Scientific Notation

2.30509x10

888888

8

5,1

12.00

Estimate this answer 57.78-45.51

5,2

A computer lab holds 6 stationary computers,

657 portable computers, and 1 ipad. They put in a grant for 79 more portable computers and won them. They had a flood and lost their ipad and 343 portable computers and 2 stationary computers. The insurance company gave them 21more portable computers. How many Computers do they have now?

429 computers

5,3

987.8756534+276.9876543=?

710.8879991

5,4

Write 0.000000000000000009878976 in Scientific notation

9.878976x10-18

PAYTON and CHELSEA’s SLIDE SHOW!!!

• Scientific notation

• Solving word problems

• Dividing decimals

• Multiplying decimals

• Estimating sums and differences

• Dividing whole number by decimals

• Evaluating expressions

• Adding and subtracting decimals