The power of dividing a decimal by a single digit

1. The meaning and writing position of each quotient in the vertical form are very important. The textbook arranges the whole ten divided by one digit 40 in the example on page 1 ÷ 2. This is the first question. Guide the students to divide the whole ten by one digit

2. Divide 60 pencils into three classes equally. How many sticks per class
Q: can you make a formula< br /> 60 ÷ 3 =
Q: how do you want to calculate? Talk with your deskmate
student 1:3 20 is 60, 60 ÷ 3 = 20
student 2: 6 tens divided by 3 is 2 tens, 60 ÷ 3 = 20
student 3:6 ÷ 3=2 ， 60 ÷ 3 = 20
teacher's summary: This is the oral calculation of dividing the whole tens by one digit, which we learned today. In the calculation, we can use the previous multiplication calculation, take the whole tens as several tens, and use the division method in the table to dece.

3. The oral calculation method of dividing tens by one digit:
in the oral calculation of dividing tens, hundreds and tens by one digit, we can regard tens and hundreds as tens, hundreds as tens, and tens as tens, and then divide them by table division
you can also use the method of "want to multiply, calculate and divide" to calculate orally.

4. If the result of dividing the whole ten by one digit is 90, then the number is one in nine.

5. The meaning and writing position of each quotient in the vertical form are very important. The textbook arranges the whole ten divided by one digit 40 in the example on page 1 ÷ 2. This is the first question. Guide the students to divide the whole ten by one digit

6. Divide the whole hundred by one digit and calculate 870 vertically ÷ 7
solution idea: divide each digit of the divisor from the high position, keep the quotient of each calculation, and add the remainder to the next digit to calculate, so the divisor will be calculated in this order, and the quotient will be combined in order, and the remainder will be the last operation result

solution process:
Step 1: 8 ÷ 7 = 1, the remainder is: 1

Step 2: 17 ÷ 7 = 2, the remainder is: 3

Step 3: 30 ÷ 7 = 4, the remainder is: 2

according to the above calculation steps, the combination result quotient is 124, the remainder is 2

checking calculation: 124 × 7 + 2 = 870

extended data ~ checking results: four operation rules (calculation in order, multiplication and division first, addition and subtraction second, brackets first, multiplication and square first) that is, disjunction operation (recursive equation calculation) should be carried out under the premise of this principle

problem solving process:
124 × 7 + 2

= 868 + 2

= 870

if in doubt, please ask, if satisfied, please accept

7. Example 1:
divide 60 pencils into three classes equally. How many sticks per class
Q: can you make a formula< br />60 ÷ 3 =
Q: how do you want to calculate? Talk with your deskmate
student 1:3 20 is 60, 60 ÷ 3 = 20
student 2: 6 tens divided by 3 is 2 tens, 60 ÷ 3 = 20
student 3:6 ÷ 3=2 ， 60 ÷ 3 = 20
teacher's summary: This is the oral calculation of dividing the whole tens by one digit, which we learned today. In the calculation, we can use the previous multiplication calculation, take the whole tens as several tens, and use the division method in the table to dece.

8. 10 / 3
3
10
3
10
...
can continue to calculate
10 / 3 = 3.333333...
hope to help you!

9. Generally speaking, if you practice more, it's very simple