Explain why you multiply to change from centimeters to millimeters

We know that a larger quantity has lesser number of objects than the smaller quantity.

For example we know if a distance is 1 km, it shall have 1000 units of meter.

so in 5 km which is 5 times 1 km, there shall be 5 times 1000 units of meter.

That is why when converting from larger to smaller units we multiply.

Now we know centimeter is a larger unit & millimeters is a smaller unit.

So when we need to convert to millimeters from centimeters we need to multiply.

the answer would be the last one (constat) she stays at the same rat every two mintues it goes up by 0.4

step-by-step explanation:

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!