Question

1. $(-6.2)+(-6.9)$

a) $-5.7$ b) $-13.1$
c) $-9.6$ d) $-7.1$

1. $(-4.3)-(-5.7)$

a) $-2.6$ b) $1.7$
c) $1.4$ d) $5.3$

1. $2.2-(-5.8)$

a) $8$ b) $14.1$
c) $3.6$ d) $8.3$

1. $(-5.9)-(-4.1)$

a) $-1.8$ b) $-7.4$
c) $-0.5$ d) $-6.3$
find each product.

1. $-1\frac{1}{3}\times-\frac{1}{4}$

a) $-1\frac{7}{12}$ b) $-\frac{11}{56}$
c) $\frac{11}{56}$ d) $\frac{1}{3}$

1. $-3\frac{2}{5}\times-\frac{6}{5}$

a) $4\frac{2}{25}$ b) $2\frac{139}{175}$
c) $4\frac{83}{100}$ d) $-4\frac{2}{25}$

Explanation:

Problem 5: $(-6.2)+(-6.9)$

Step1: Add the absolute values

When adding two negative numbers, we add their absolute values and keep the negative sign. So, $| -6.2 | + | -6.9 | = 6.2 + 6.9$.
$6.2 + 6.9 = 13.1$

Step2: Apply the negative sign

Since both numbers are negative, the result is negative. So, $(-6.2)+(-6.9) = -13.1$

Step1: Rewrite subtraction as addition

Subtracting a negative number is the same as adding its positive. So, $(-4.3)-(-5.7) = -4.3 + 5.7$

Step2: Perform the addition

$5.7 - 4.3 = 1.4$

Step1: Rewrite subtraction as addition

Subtracting a negative number is adding its positive. So, $2.2 - (-5.8) = 2.2 + 5.8$

Step2: Perform the addition

$2.2 + 5.8 = 8$

Answer:

B) -13.1

Problem 6: $(-4.3)-(-5.7)$