Compare and Order
Rational Numbers
Rational Numbers
Which is greater: -8.4 or -8.04?
-8.4
What is the absolute value of \(-15\)?
15
Evaluate: -7+(-6)
-13
Evaluate: (-6)(4)
-24
Write 3/20 as a decimal
0.15
Write these numbers from least to greatest: 3, -2.5, 0, -4
-4, -2.5, 0, 3
Is -12 - (-5) positive, negative, or zero?
-12 - (-5)= -7
Evaluate: 14 - (-9)
23
Evaluate: (-42) ÷ (-7)
6
Write 0.36 as a fraction in simplest form.
9/25
Compare -6.75 and -6 3/4 using >,< or =
What is the sign of (-2)(-2)(-2)(-2)(-2)(-2)
Positive: there are six negative factors, an even number.
Evaluate: -18.65 + 7.4
-11.25
Evaluate: 6.4 x (-0.5)
-3.2
A diver descends 2 1/2 feet per minute for 4 minutes. What is the diver's change in elevation relative to the starting point?
-10 feet; the diver descends 10 feet.
Order these numbers from least to greatest: -5.2, -5 1/4, 5.05, 5 1/8
-5 1/4, -5.2, 5.05, 5 1/8
Without calculating the exact answer, determine whether (-18) ÷ (-3) x (-2) is positive or negative.
Negative; a positive result multiplied by a negative number is negative.
Evaluate: -12 1/2 - (-4.75). Give your answer as a decimal.
Evaluate: -15 1/2 ÷ (-1/2)
31
A recipe needs 2 1/4 cups of flour per batch. If you make 2/3 of a batch, how much flour do you need?
1 1/2 cups
A vertical number line shows -7.1, -7 1/8, -7, 0.25, 1/4. Which two values are equivalent, and where do they belong in the order?
0.25= 1/4. Order: -7 1/8, -7.1, -7, 0.25, 1/4. The equivalent values belong at the same position.
A student says, “Subtracting a negative number always makes the answer negative.” Explain why the statement is incorrect and give an example.
Subtracting a negative is the same as adding a positive. Example: 4- (-3)= 7
The temperature was -6.8° in the morning. It increased by 9.35°, then dropped by 4.2°. What was the final temperature?
-1.65.
-6.8+9.35-4.2= -1.65
Evaluate: -2.4 x 1 1/4 ÷ (-0.5)
6.
Calculations: -2.4 x 1.25= -3, then -3 ÷ (0.5)=6
A teacher needs 3/4 pounds of clay for each of the 24 students. She already has 6 1/2 pounds. How many more pounds of clay does she need?
11 1/2 pounds.
24 x 3/4= 18 pounds; 18-6 1/2= 11 1/2 pounds.