Math worksheet for practicing subtraction of two negative numbers, designed for educational use.

Let's solve each of these problems step by step. The task is to subtract a positive number from a negative number, which is equivalent to adding two negative numbers.

The rule to remember:
> Subtracting a positive number from a negative number makes the result more negative.

In other words:
> $-a - b = -(a + b)$

So we can rewrite each expression as adding the absolute values and keeping the negative sign.

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a) $-2 - 2$

This means: $-2 - 2 = -(2 + 2) = -4$

✔ Answer: -4

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b) $-1 - 5$

$-1 - 5 = -(1 + 5) = -6$

✔ Answer: -6

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c) $-4 - 5$

$-4 - 5 = -(4 + 5) = -9$

✔ Answer: -9

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d) $-5 - 3$

$-5 - 3 = -(5 + 3) = -8$

✔ Answer: -8

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e) $-6 - 8$

$-6 - 8 = -(6 + 8) = -14$

✔ Answer: -14

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f) $-10 - 6$

$-10 - 6 = -(10 + 6) = -16$

✔ Answer: -16

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g) $-15 - 12$

$-15 - 12 = -(15 + 12) = -27$

✔ Answer: -27

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h) $-18 - 11$

$-18 - 11 = -(18 + 11) = -29$

✔ Answer: -29

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i) $-21 - 20$

$-21 - 20 = -(21 + 20) = -41$

✔ Answer: -41

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j) $-25 - 32$

$-25 - 32 = -(25 + 32) = -57$

✔ Answer: -57

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✔ Final Answers:

a) $-4$
b) $-6$
c) $-9$
d) $-8$
e) $-14$
f) $-16$
g) $-27$
h) $-29$
i) $-41$
j) $-57$

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🔍 Explanation:

When you subtract a positive number from a negative number, it’s like moving further left on the number line (more negative). So you add the absolute values and keep the negative sign.

For example:
$-5 - 3$: Start at $-5$, move 3 units to the left → $-8$

This is consistent with the rule:
$$
-a - b = -(a + b)
$$

Let me know if you'd like a visual number line explanation!