Question

1)428м 5дм * 3 = ? 2)4ч 4 мин * 4 = ? 3)20грн 50к * 9 = ? 4)54мин 15с * 3 =?

Answer 1

4ч 4 мин= 9760мин
4ч4мин=2440*4=9760
54мин15сек=99765сек
54мин15сек=3240сек+15=3255
3255*3=9765сек
а дальше я не поняла

Answer 2

1. To multiply 428m 5dm by 3, we first need to convert all the measurements to the same unit. Let's convert dm to meters.

1 dm = 0.1 m

So, 5 dm = 5 * 0.1 m = 0.5 m

Now, we can perform the multiplication:

428 m * 3 = 1284 m 0.5 m * 3 = 1.5 m

The result is 1284 m 1.5 m.

2. To multiply 4h 4min by 4, we need to convert minutes to hours, as it's the common unit for multiplication.

1 hour = 60 minutes

4 min = 4/60 = 0.067 hours (approximately)

Now, we can perform the multiplication:

4 hours * 4 = 16 hours 0.067 hours * 4 = 0.268 hours (approximately)

The result is 16 hours 0.268 hours.

3. To multiply 20grn 50k by 9, we need to convert kopecks (k) to hryvnias (grn) to perform the multiplication.

1 hryvnia = 100 kopecks

So, 50 kopecks = 50/100 = 0.5 hryvnia

Now, we can perform the multiplication:

20 hryvnias * 9 = 180 hryvnias 0.5 hryvnia * 9 = 4.5 hryvnias

The result is 180 hryvnias 4.5 hryvnias.

4. To multiply 54 min 15 sec by 3, we need to convert seconds to minutes, as it's the common unit for multiplication.

1 minute = 60 seconds

15 sec = 15/60 = 0.25 min

Now, we can perform the multiplication:

54 min * 3 = 162 min 0.25 min * 3 = 0.75 min

The result is 162 min 0.75 min (or approximately 162 min 45 sec).