then at picture no. 2 i explained why i knew that 225 ÷ 75 is 3.
let me explain it.
since the divisor (outside the division line or 0.75) is decimal, you need to move it to the right, but, if you move the dot, you also need to move the dot in the "dividend" (inside the division line or 225). but how many times did you move the dot in divisor? 2 times! so you also need to move the dot in the dividend in 2 times. so let's put 2 zero's. so let's calculate it. let's ask, how many 75 will it take to make 22 or almost 22? no, 75 is too big for 22, so let's move to the next digit. and let's ask, how many 75 will it take to make 225 or almost 225? according to my 2nd pic, i added 75 "3" times, so it means that the answer is 3. and i explain it all in the 1st pic :)
and you ask "why move the 'dot' in the dividend even if there's no dot in there?" because the number without decimal secretly had a dot in the right, but it's invisible or it's useless when you put the dot in the number that is not a decimal (example: 150. ) and next to the dot is zero's and the zero's are also useless because it's just zero's so that's why the zero's and the dot are invisible. there's also a fact about dot: next to the dot is zero's right? but how many zero's? its infinity! and you know, if you put ".00000" in calculator they will consider it as invisible. try to put any number (for example: 3) with .00000 or how many zero's you want to put in calculator, they will consider it as invisible.
do you want more explanation? ask it in the comments :)
Answers & Comments
Verified answer
Answer:
300
Step-by-step explanation:
the solution is at picture no. 1
then at picture no. 2 i explained why i knew that 225 ÷ 75 is 3.
let me explain it.
since the divisor (outside the division line or 0.75) is decimal, you need to move it to the right, but, if you move the dot, you also need to move the dot in the "dividend" (inside the division line or 225). but how many times did you move the dot in divisor? 2 times! so you also need to move the dot in the dividend in 2 times. so let's put 2 zero's. so let's calculate it. let's ask, how many 75 will it take to make 22 or almost 22? no, 75 is too big for 22, so let's move to the next digit. and let's ask, how many 75 will it take to make 225 or almost 225? according to my 2nd pic, i added 75 "3" times, so it means that the answer is 3. and i explain it all in the 1st pic :)
and you ask "why move the 'dot' in the dividend even if there's no dot in there?" because the number without decimal secretly had a dot in the right, but it's invisible or it's useless when you put the dot in the number that is not a decimal (example: 150. ) and next to the dot is zero's and the zero's are also useless because it's just zero's so that's why the zero's and the dot are invisible. there's also a fact about dot: next to the dot is zero's right? but how many zero's? its infinity! and you know, if you put ".00000" in calculator they will consider it as invisible. try to put any number (for example: 3) with .00000 or how many zero's you want to put in calculator, they will consider it as invisible.
do you want more explanation? ask it in the comments :)