Question

1. Realiza las siguientes multiplicaciones:

a. (+3) (+5) = f. (+40) (+7) =

b. (+8) (–1) = g. (–1) (–1) =

c. (–5) (–4) = h. (5) (–3) =

d. (–1) (+78) = i. (9) (–10) =

e. (+12) (–12) = j. –9 (–8) =

2. Realiza las siguientes divisiones:

a. 14 ÷ 2 = f. (–1) ÷ (–1) =

b. (–12) ÷ (–4) = g. (–8) ÷ (+8) =

c. 20 ÷ (–5) = h. (+25) ÷ (–5) =

d. (–30) ÷ 6 = i. (+100) ÷ (+10) =

e. (–10) ÷ (–2) = j. (–144) ÷ (+12) =

3. Completa la siguiente tabla:


4. Colorea los triángulos; de color rojo los productos positivos y de color azul los productos negativos:


5. Resuelve las siguientes operaciones combinadas:

a. – 5 × 3 + 8 – (4 – 1 × 5)

b. – 12 × [ – 6 – 10 × ( – 2 – 3)]

c. – 3 (4 – 2 + 5)

d. – 15 ( – 4) + 2 [ – 3 (2) + (6 – 2 (8))]

Demuestra lo aprendido

1. Si: A

Answer 1

1)

a. (+3) (+5) = 15 f. (+40) (+7) = 280

b. (+8) (–1) = -8 g. (–1) (–1) = 1

c. (–5) (–4) = 20 h. (5) (–3) = -15

d. (–1) (+78) = -78 i. (9) (–10) = -90

e. (+12) (–12) = -144 j. –9 (–8) = -72

2)

a. 14 ÷ 2 = 7 f. (–1) ÷ (–1) = 1

b. (–12) ÷ (–4) = 3 g. (–8) ÷ (+8) = -1

c. 20 ÷ (–5) = -4 h. (+25) ÷ (–5) = -5

d. (–30) ÷ 6 = -5 i. (+100) ÷ (+10) = 10

e. (–10) ÷ (–2) = 5 j. (–144) ÷ (+12) = -12

5)

a. – 5 × 3 + 8 – (4 – 1 × 5)

-15 + 8 - (4 - 5)

-15 + 8 + 1

-6

b. – 12 × [ – 6 – 10 × ( – 2 – 3)]

-12 × [-6 - 10 × (-5)]

-12 × [-6 + 50]

-12 × 44

-528

c. – 3 (4 – 2 + 5)

-3 (9 - 2)

-3 (7)

-21

d. – 15 ( – 4) + 2 [ – 3 (2) + (6 – 2 (8))]

60 + 2 [-6 + (6 - 16)]

60 + 2 [-6 - 10]

60 + 2 [-16]

60 - 32

28

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