Different signs: subtract and use sign of larger absolute value.

$|-8| = 8, \quad |5| = 5$

Since 8 > 5: $8 - 5 = 3$

Use negative sign (from -8): $-8 + 5 = -3$

Answer: $-3$

Change subtraction to adding the opposite: $-6 - (-9) = -6 + 9$

Different signs: subtract and use sign of larger. $9 - 6 = 3$

Use positive sign (from 9): $-6 + 9 = 3$

Answer: $3$

Change subtraction to adding the opposite: $-6 - (-9) = -6 + 9$

Different signs: subtract and use sign of larger. $9 - 6 = 3$

Use positive sign (from 9): $-6 + 9 = 3$

Answer: $3$

Work left to right:

Step 1: $(-4) \times 3 = -12$ (different signs → negative)

Step 2: $-12 \times (-2) = 24$ (same signs → positive)

Answer: $24$

Work left to right:

Step 1: $(-4) \times 3 = -12$ (different signs → negative)

Step 2: $-12 \times (-2) = 24$ (same signs → positive)

Answer: $24$

Step 1: Identify the signs. Negative ÷ Positive = Negative

Step 2: Divide the absolute values. 48 ÷ 6 = 8

Step 3: Apply the negative sign. (-48) ÷ 6 = -8

Answer: -8

Step 1: Set up with integers. Surface = 0 Descend = negative (down) Rise = positive (up)

Step 2: Write the expression. 0 + (-40) + 15 + (-25) + 30

Step 3: Calculate step by step. 0 - 40 = -40 -40 + 15 = -25 -25 - 25 = -50 -50 + 30 = -20

Step 4: Interpret the result. -20 feet means 20 feet below surface

Answer: 20 feet below the surface (or -20 feet)