12.15x19 i need my homework is due !

285

Step-by-step explanation:

15 times 19 mathematically is = 15 x 19

Value of 15 times 19 = 285

15 times 19 in computer terms is = 15 * 19, which is 2 digit by 2 digit multiplication

15 times 19 is the same as 15s in 19 places, which is the same as multiples of 15 added in 19 times. as shown below

15 x 19= 15 +15 +15 +15 +15 +15 +15 +15 +15 +15 +15 +15 +15 +15 +15 +15 +15 +15 +15

= 285

$4

step-by-step explanation:

$30×5=$150

$150 minus $130=$20

$20÷5=$4.

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step-by-step :