Decimal Operations Review 1

​Decimal Operations Review

• I can choose the correct operation for a given decimal problem.

• I can set up each problem using correct place value or place the decimal correctly at the end.

• I can calculate the correct sum, difference, product, or quotient using the standard algorithm.

Success Criteria

I can solve multi-digit problems with decimals, including addition, subtraction, multiplication, and division, by applying the standard algorithm for each on my Quizizz lesson responses. I can solve mathematical problems and real-world scenarios involving decimals using these algorithms.

Learning Objective

Decimal Operations Review

Poll

Rate how you feel about decimal operations (adding, subtracting, multiplying, and dividing).

• I don't know how to do this.

  Below Proficient

• I understand some of this. I'm getting there.

  Approaching Proficient

• I understand this.

  Proficient

• I deeply understand this so well I could fully explain it.

  Highly proficient

Dropdown

A decimal separates the ​

Select answer

numbers on the ​

Select answer

side of the decimal from the parts or fractions on the ​

Select answer

side of the decimal. The place value one space to the left of the decimal is the ​

Select answer

place.

The place value to the right of the decimal is the ​

Select answer

place.

Categorize

Options (18)

Combined

Sum

Total

Increase

Plus

Difference

Decrease

Minus

Less

How much more or less

Product

Times

Multiply

Factors

Quotient

Divide

Fraction

Split into equal groups

Match each word or phrase to the operation it indicates:

Addition +

Subtraction -

Multiplication x * ()() ⋅

Division ÷

Multiple Choice

What is the first step when adding or subtracting numbers with decimals?

• Multiply the numbers before adding or subtracting.
• Convert all decimals to fractions first.

• Erase the decimal points.

• Line up the decimal points and place values.

• Divide the numbers.

Multiple Choice

TRUE OR FALSE: When adding or multiplying, the order of the two numbers will change the answer.

• TRUE
• FALSE

Multiple Choice

TRUE OR FALSE: When subtracting or dividing, the order of the two numbers will change the answer.

• TRUE
• FALSE

​THIS ONLY APPLIES TO ADDITION AND MULTIPLICATION

Multiple Choice

What is the best definition for equivalent?

• Equal in value

• Opposite

• Evil

• Identical in color but different in size.
• Triangular

Multiple Choice

TRUE OR FALSE: $$18.62\ \div\ 3.1$$ is equivalent to $$3.1\div18.62$$

• TRUE
• FALSE

Multiple Choice

TRUE OR FALSE: $$3.8\times0.23$$ is equivalent to $$0.23\times3.8$$

• TRUE
• FALSE

Fill in the Blank

Find the sum: 12.4 + 6 =

.

Fill in the Blank

Find the difference:

12.4 - 6 =

.

Fill in the Blank

Find the product:

$$12.4\times6$$ =

.

Fill in the Blank

Find the quotient:

$$12.4\div4$$ =

.

Multiple Choice

A number multiplied by 1

• Stays the same or is itself

• Always gets bigger

• Always gets smaller

• Becomes zero

Multiple Choice

A number divided by 1

• Stays the same or is itself

• Always gets bigger

• Always gets smaller

• Becomes zero

Multiple Choice

A number multiplied by less than 1

• Stays the same or is itself

• Always gets bigger

• Always gets smaller

• Becomes zero

Multiple Choice

A number multiplied by more than 1

• Stays the same or is itself

• Always gets bigger

• Always gets smaller

• Becomes zero

Multiple Choice

A number divided by more than 1

• Stays the same or is itself

• Always gets bigger

• Always gets smaller

• Becomes zero

Multiple Choice

A number divided by less than 1

• Stays the same or is itself

• Always gets bigger

• Always gets bigger

• Becomes zero

Math Response

Find the sum of 31.8 and 0.45

Type answer here

Correct Answer: 32.25

Deg^°

Rad

Math Response

Find the sum of 0.8 and 0.3

Type answer here

Correct Answer: 1.1

Deg^°

Rad

Math Response

88.22 x 0.5 =

Type answer here

Correct Answer: 44.11

Deg^°

Rad

Math Response

21.04 $$\div$$ 0.5 =

Type answer here

Correct Answer: 42.08

Deg^°

Rad

Math Response

18.3 - 4.11 =

Type answer here

Correct Answer: 14.19

Deg^°

Rad

Math Response

8.07 x 4.4

Type answer here

Correct Answer: 35.508

Deg^°

Rad

Math Response

A garden hose is 6.8 meters long. If each piece you cut is 0.25 meters, how many pieces can you cut?

You can cut _____ pieces.

(Hint: Your answer will have a decimal in it.)

Type answer here

Correct Answer: 27.2

Deg^°

Rad

Match

Match each problem to its answer:

• 12.05 x 5

• 240.4 ÷ 4

• 200 - 90.7

• 54.3 + 130.7

• 8.4 ÷ 100

60.25

60.1

109.3

185

0.084

• 60.25

• 60.1

• 109.3

• 185

• 0.084

Poll

Rate how you feel about decimal operations (adding, subtracting, multiplying, and dividing).

• I don't know how to do this.

  Below Proficient

• I understand some of this. I'm getting there.

  Approaching Proficient

• I understand this.

  Proficient

• I deeply understand this so well I could fully explain it.

  Highly proficient