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7th Math 2.16 Version B

Last updated over 2 years ago
8 questions

Math - [Lesson 2.16]

Teacher: Mr. Kovalik (408) 314-1092

Objective and Summary:
SWBAT efficiently multiply and divide rational numbers by using properties of operations
1

Calculate--Evaluate the expression below (rewrite it as a single number).
For this problem only, please show your work on Formative.
5\times\frac{3}{2}\times3\times(-2)

CFS:
#1: Appropriately uses properties of operations to reorder expression
#2: Accurately evaluates expression

For the rest of independent practice, just do your calculations on the SYW page of your notebook. Type answers into Formative to check if they are correct.
1

Calculate--Evaluate the expression.
\frac{3}{8}\times9\cdot(-16)

CFS:
#1: Appropriately uses properties of operations to reorder expression
#2: Accurately evaluates expression

1

Calculate--Evaluate the expression.
-1.3\times\frac{1}{2}\times(-4)\times10

CFS:
#1: Appropriately uses properties of operations to reorder expression
#2: Accurately evaluates expression

MEDIUM PROBLEMS
1

KCF is Back!--Evaluate the expression.

\frac{1}{2}\div(-\frac{1}{4})\times(-9)\times-(\frac{2}{3})

CFS:
#1: Appropriately uses properties of operations to reorder expression
#2: Accurately evaluates expression

1

Mix n Match--Don't calculate! Use the rules for signs to determine if these expressions will have positive or negative answers.

  • -5\times(-10)\times(-\frac{1}{2})\div4\times1000
  • \frac{3}{8}\times(-\frac{1}{2})\times(-14)\times(-15)\div(-32)
  • 200\div10\times(-\frac{1}{5})\div(-4)
  • -\frac{7}{8}\times(-\frac{3}{25})\times(-235)\div(-72)
  • Positive Answers
  • Negative Answers
1

Efficiency--Use the commutative property of multiplication to evaluate the expression.
Hint: Try to multiply fractions so that they make whole numbers first.

-2(\frac{1}{3})\times4\times3\times\frac{1}{4}

CFS:
#1: Appropriately uses properties of operations to reorder expression
#2: Accurately evaluates expression

1

SPICY--Try if you have time.
(Remember that you can rewrite division as multiplication. Think KCF)

4\div\frac{2}{3}\times(-8)\times10\times(-\frac{3}{4})

CFS:
#1: Appropriately uses properties of operations to reorder expression
#2: Accurately evaluates expression

4

Evaluate the expression using properties of operations.
To get any credit, you MUST show your work on Formative.
10\times(-16)\times(\frac{-3}{2})\times\frac{1}{8}

CFS:
#1: Appropriately uses properties of operations to reorder expression
#2: Accurately evaluates expression

Awesome! Remember if you were able to finish early that you should push yourself with more practice.

1) Start with the new starred/recommended skills on IXL

2) Work on above grade level skills on IXL