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1. Evaluate each of the following:

(i) [tex]5 \times (-2)[/tex]

(ii) [tex](-3) \times (-125)[/tex]

(iii) [tex]333 \times (-1)[/tex]

(iv) [tex](-40) \div (-5)[/tex]

(v) [tex]60 \div (-12)[/tex]

(vi) [tex]10 \times (-5) \times (-8)[/tex]

(vii) [tex](-2) \times (-4) \times (-6) \times (-8)[/tex]

(viii) [tex](-21) \times 0 \times 42[/tex]

(ix) [tex]0 \div (-15)[/tex]


Sagot :

Certainly! Let's go through each of the operations step by step.

1. Evaluate each of the following:
(i) [tex]\(5 \times (-2)\)[/tex]

To multiply 5 and -2:
[tex]\[ 5 \times (-2) = -10 \][/tex]
The result is [tex]\(-10\)[/tex].

(ii) [tex]\((-3) \times (-125)\)[/tex]

To multiply -3 and -125:
[tex]\[ (-3) \times (-125) = 375 \][/tex]
When you multiply two negative numbers, the result is positive. So, the result is [tex]\(375\)[/tex].

(iii) [tex]\(333 \times (-1)\)[/tex]

To multiply 333 and -1:
[tex]\[ 333 \times (-1) = -333 \][/tex]
The result is [tex]\(-333\)[/tex].

(iv) [tex]\((-40) \div (-5)\)[/tex]

To divide -40 by -5:
[tex]\[ (-40) \div (-5) = 8.0 \][/tex]
When you divide two negative numbers, the result is positive. So, the result is [tex]\(8.0\)[/tex].

(v) [tex]\(60 \div (-12)\)[/tex]

To divide 60 by -12:
[tex]\[ 60 \div (-12) = -5.0 \][/tex]
The result is [tex]\(-5.0\)[/tex].

(vi) [tex]\(10 \times (-5) \times (-8)\)[/tex]

To multiply 10, -5, and -8 step by step:
[tex]\[ 10 \times (-5) = -50 \][/tex]
Then multiply by -8:
[tex]\[ -50 \times (-8) = 400 \][/tex]
So, the result is [tex]\(400\)[/tex].

(vii) [tex]\((-2) \times (-4) \times (-6) \times (-8)\)[/tex]

To multiply -2, -4, -6, and -8 step by step:
[tex]\[ (-2) \times (-4) = 8 \][/tex]
Then multiply by -6:
[tex]\[ 8 \times (-6) = -48 \][/tex]
Finally, multiply by -8:
[tex]\[ -48 \times (-8) = 384 \][/tex]
So, the result is [tex]\(384\)[/tex].

(viii) [tex]\((-21) \times 0 \times 42\)[/tex]

To multiply -21, 0, and 42:
[tex]\[ (-21) \times 0 \times 42 = 0 \][/tex]
Any number multiplied by 0 is 0. So, the result is [tex]\(0\)[/tex].

(ix) [tex]\(0 \div (-15)\)[/tex]

To divide 0 by -15:
[tex]\[ 0 \div (-15) = -0.0 \][/tex]
Any number (including zero) divided by a non-zero number results in zero. The results may reflect a negative sign due to division direction, but mathematically it is [tex]\(0\)[/tex].

So, the comprehensive results are:
[tex]\[ [-10, 375, -333, 8.0, -5.0, 400, 384, 0, -0.0] \][/tex]