250 divided by 60 equals 4 plus 1, right? Tell me your reasons.

The quotient is right and the remainder is wrong.

250÷60=4… 10

The reason is also clear.

(250- 1)÷60=4…9

(250- 10)÷60=4 It can be seen that the remainder is 10.

The reason for this error may be

Misunderstanding of the principle of quotient invariance. 250÷60=25÷6 (there is nothing wrong with this step)

25 ÷ 6 = 4... 1 There is nothing wrong. However, the equal sign cannot be applied continuously. Because the dividend and divisor are divided by ten at the same time, the quotient remains unchanged and the remainder changes. The rest need to be restored. This is also a common mistake in learning the principle of quotient invariance. Through practice, the problem can be solved quickly.