Conditional statements practice

Select an accurate counter example to the given conjecture:

“Any number multiplied by a -2 will be a negative number.”

• There is no counter example

• 15

• -5

• 5

Tags

CCSS.6.EE.B.6

Find an accurate counterexample for the conjecture:

“Any whole number multiplied by itself is greater than the original number.”

“If x is 22, then x - 10 = 12”

The conclusion is ________

• X is 22

• If x is 22

• X - 10 = 12

• Then x - 10 = 12

Tags

CCSS.8.EE.C.7B

Select an accurate conjecture about the pattern:

“14, 7, 0, -7,…”

• Divide by 2

• Multiply by 1/2

• Subtract half of the number

• Subtract by 7

Tags

CCSS.5.OA.B.3

Create a counterexample to prove the conjecture false:

“Any month that begins with a ‘J’ is a summer month.”

Tags

CCSS.L.1.1J

CCSS.L.2.1F

CCSS.L.4.1C

“If two angles are supplementary angles, then the sum of the measure of the angles is 180.”

Identify the hypothesis

• If two angles are supplementary angles

• Then the sum of the measure of the angles is 180

• Two angles are supplementary angles

• The sum of the measure of the angles is 180

Tags

CCSS.7.G.B.5

P: A square has 3 sides.

Q: A square has 4 right angles.

What is the truth value of the compound statement P and Q

• True

• False

• None of the above

• They are neither true or false

Any odd number, x, times two is an odd number.

Is x = 6 a good counter example.

• Yes, because it proves the statement false.

• No, because 6 times 2 is even

• No, because 6 is not an odd number.

Make a conjecture about the sum of any three even numbers.

Tags

CCSS.3.OA.D.9

Make a conjecture about the sum of an odd number and an even number, plus 2.

Tags

CCSS.3.OA.D.9