- A2
- B5
- C3
- D1
Step-by-Step Solution
6 yellow and 3 red make 3 zero pairs, leaving . To go from to he needs more red counters.
Answer: B) 5
In a counter game, a yellow (+) counter is +1 and a red (−) counter is −1; a + and a − together make zero. How many more red counters must Ravi put in his tray so that it shows −2?
Class 6IntegersIntegers
Key idea: Subtracting integers
Subtraction of integers is just adding the **opposite**: a − b = a + (−b). So 5 − 8 = 5 + (−8) = −3. And 5 − (−8) = 5 + 8 = 13. The 'minus minus' that looks confusing in symbols is simply: subtracting a negative is the same as adding its positive twin. Always rewrite subtraction as addition of the opposite — it removes every sign-error trap.
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