Multiply Positive & Negative Decimals
What is 2.5 * –3?
–7.5
What is 6.4 ÷ -0.8?
-8
What is 2/3 ÷ –1/6?
–4
What is –3/4 * 2/5
–3/10
The temperature is -2.5°C. Overnight, it becomes 3 times as cold.
What is the new temperature?
-7.5°C
What is –4.2 * 1.5?
–6.3
What is –7.5 ÷ 2.5?
-3
What is 3/5 ÷ -1/2?
-6/5 (or -1 1/5)
What is -4/5 × 3/2?
-6/5 (or -1 1/5)
A student spends $1.75 each day for 4 days. Each amount is recorded as a negative change.
What is the total change in their money?
-7
What is -1.8 × 2.5?
-4.5
What is 4.8 ÷ –0.6?
–8
What is –7/8 ÷ –1/2?
7/4
What is –2/3 * –9/10?
3/5
A diver is -12.6 meters below sea level. They rises to the surface in 3 equal steps.
How many meters do they rise in each step?
+4.2
(−12.6÷3=−4.2, but rising means +4.2 each step)
What is 3.75 * –0.4?
–1.5
What is –9.36 ÷ 3.9?
–2.4
What is 2 1/4 ÷ –3/4?
–3
What is 5/6 × -3/4?
-5/8
A recipe removes 3/4 cup of an ingredient each time. This happens 5 times, and each removal is a negative change.
What is the total change in the mixture?
-15/4 cups (or -3 3/4 cups)
What is –2.34 * 3.2
–7.488
What is 5.25 ÷ –0.35?
–15
What is –1 2/3 ÷ 5/6
–2
What is 2 2/5 * –1 1/2?
–3 3/5
A climber descends -2 1/2 miles each day for 4 days. The total change is then split evenly into 5 sections of the trail.
What is the change in elevation for each section?
-2 per section
Step 1: Total change
−2 1/2=−5/2 then −5/2*4=−20/2=−10
Step 2: Divide into sections
−10÷5=−2