Multiplying Two Digit Integers

For each of the following pairs of numbers, find the product of the numbers, and then find the product of the greatest common divisor and least common multiple of the numbers.

35, 42

For each of the following pairs of numbers, find the product of the numbers, and then find the product of the greatest common divisor and least common multiple of the numbers.

66, 84

Echoing a one-digit number to make it a two-digit number (for example, making 2 into 22) is equivalent to multiplying by eleven. Echoing a two-digit number to make it a four-digit number (for example, making 23 into 2323) is equivalent to multiplying the two-digit number by what value?

• 42 = 2 x 3 x 7

• 42 = 2 x 3 x 6

• 42 = 2 x 3 x 5

Evaluate xy if x = -2 and y = -13.

1. Since the 2 integers have ​ (a)   , 

2. The product will be ​ (b)  

3. xy =​ (c)  

• Same Signs

• Positive

• 26

• Different Signs

• Negative

• -26

product of 9 and -8.

• 1

• -17

• -72

• 72

Perform the indicated operation.

-9 ⋅ 12

• -98

• 108

• -118

• -108

product of 9 and -8.

• 1

• -17

• -72

• 72

• 56 = 7 x 2 x 2 x 2 x 2

• 56 = 7 x 2 x 2 x 2

Solve: -5(6) =

• 1

• -1

• 30

• -30