Kameren has blue and black pens. He has 40 pens in total, and 35% of them are blue. How many black pens does he have? 

Kameren has 40 pens in total, and 35% of them are blue.

1. First, calculate the number of blue pens by finding 35% of 40:
\[
\text{Blue pens} = 0.35 \times 40 = 14
\]

2. Now, subtract the number of blue pens from the total number of pens to find the number of black pens:
\[
\text{Black pens} = 40 - 14 = 26
\]

Kameren has **26 black pens**.

Do you want more details or have any other questions?

Here are 5 related questions you might find interesting:
1. If Kameren had 60 pens and 40% were blue, how many would be black?
2. What percentage of Kameren's pens are black?
3. If Kameren gave away 10 blue pens, how many pens would he have left?
4. What fraction of Kameren's pens are blue?
5. If Kameren buys 10 more black pens, how many black pens will he have?

**Tip:** Always double-check percentage problems by verifying your calculations step by step.

Kameren has blue and black pens. He has 40 pens in total, and 35% of them are blue. How many black pens does he have?

Find out how many black pens Kameren has if he owns 40 pens in total and 35% of them are blue. This problem covers basic arithmetic and percentage concepts, ideal for students in Grades 5-6.

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