Sumar.
1 a. |
(–12) + 9 + (–4) + 5 = ______
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1 b. |
(–18) + (–5) + 1 + (–10) = ______
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2 a. |
19 + (–9) + (–1) + 6 = ______
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2 b. |
(–1) + (–2) + (–7) + (–6) = ______
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3 a. |
(–17) + 6 + 7 + 8 = ______
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3 b. |
(–17) + 4 + 8 + 0 = ______
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4 a. |
(–2) + (–4) + (–9) + 9 = ______
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4 b. |
14 + 5 + (–7) + (–10) = ______
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5 a. |
19 + 2 + (–9) + (–10) = ______
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5 b. |
(–12) + (–10) + (–6) + 8 = ______
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6 a. |
(–9) + (–9) + 8 + 7 = ______
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6 b. |
(–1) + 5 + 1 + (–7) = ______
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7 a. |
(–18) + 1 + 4 + 9 = ______
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7 b. |
1 + 7 + 5 + (–10) = ______
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8 a. |
(–20) + (–10) + (–3) + 7 = ______
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8 b. |
10 + (–3) + 9 + 8 = ______
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