Rational or Not?
√25 is a rational number
Yes, because √25 = 5, which is an integer.
Convert 1/4 to a decimal.
0.25
Evaluate: 3/5 + 2/5
1
Which is greater: –0.2 or –0.25?
-0.2
A temperature moves from –3°C to 5°C. What is the change?
+8°C
Is 0.121121112… rational?
No, it’s non-repeating and non-terminating.
Convert 0.6̅ to a fraction
2/3
Exaluate: –4 + 9
5
Order from least to greatest: 1/3, –0.4, 0.25
–0.4, 0.25, 1/3
You owe $6 and pay back $4. What is your balance?
-$2
True or False: Every integer is a rational number.
True (any integer n = n/1)
Convert 7/8 to a decimal
0.875
Evaluate: (–3/4) × (2/3)
-1/2
Which is larger: 0.7 or 2/3?
0.7
A submarine descends 50 m, then ascends 20 m. What is its final position?
-30 m
Write one example of an irrational number
π, √2, √7
Convert 0.125 to a simplified fraction.
1/8
Evaluate: 5 ÷ (–1/2)
-10
Put in ascending order: –8/5, –1.5, –1.55
–1.55, –1.5, –8/5 (≈ –1.6)
A recipe uses 3/4 cup sugar. You use 2 batches. How much sugar total?
1 1/2 cups
Write a rational number between 2 and 3.
Many answers: 2.5
Convert 3.75 to a mixed number.
3 3/4
Evaluate: –7/9 – 4/9
–1 2/9
Which is smaller: –8/3 or –2.5?
–8/3 ≈ –2.67
A plane ascends 1250 m, then descends 1875 m. What is the final change?
–625 m