=84×( 100+ 1)

=84× 100+84

=8400+84

=8484

(300+6)× 12

=300× 12+6× 12

=3600+72

=3672

504×25

=(500+4)×25

=500×25+4×25

= 12500+ 100

= 12600

25×(4+8)

=25×4+25×8

= 100+200

=300

78× 102

=78×( 100+2)

=78× 100+78×2

=7800+ 156

=7956

25×204

=25×(200+4)

=25×200+25×4

=5000+ 100

=5 100

99×64

=( 100- 1)×64

= 100×64-64

=6400-64

=6336

99× 13+ 13

=(99+ 1)× 13

= 100× 13

= 1300

(20+4)×25

=20×25+20×4

= 100+80

= 180

35×37+65×37

=(35+65)×37

= 100×37

=3700

25×4 1

=25×(40+ 1)

=25×40+25× 1

= 100+25

= 125

32×(200+3)

=32×200+32×3

=6400+96

=6496

38×29+38

=38×(29+ 1)

=38×30

= 1 140

39× 10 1

=39×( 100+ 1)

=39× 100+39× 1

=3939

What is the distribution law of primary school mathematics? Text explanation: two numbers are multiplied by the same number, and their products add up, which is equal to the addition of two different numbers multiplied by the same number.

Alphabetic formula: ab+ac=a×(b+c)

Algebraic formula: (f (x)+g (x)) h (x) = f (x) h (x)+g (x) h (x)

For example: 35× 37+65× 37 = 37× (35+65) = 37×100 = 3700.

This is the law of distribution

Elementary school mathematics. Does division have a distribution law? I don't know,

But there is (a+b) ÷ c = a ÷ c+b ÷ c.

Sincerely answer every question for you!

If you are satisfied, please adopt the best! If in doubt, please continue to ask questions!

Your praise is the driving force for us to move forward, learn from each other and make progress together!

A primary school math score problem 15/ 16 is not easy to play. You only need one hypothesis and the score will do.

Elementary school math problem, 50+[]*0.8=60 is 12.5.

The bottom is 0.6.

1 elementary school math problem 2*π*5? +2π* 5 * 6 = 1 10π= 345.4 cm2。

12*2=24 kg

1.8- 1=0.8

B 24/0.8=30 kg

One piece1.8 * 30 = 54kg

The green area accounts for 35% of the total area.

Find the number of primary school math problems 0.5:69

5.9:34

12: 19

25:43

42: 18

1290:6957

12.06:59.24

498:268

135:257

1.3/7 × 49/9 - 4/3

2.8/9 × 15/36 + 1/27

3. 12× 5/6 – 2/9 ×3

4.8× 5/4 + 1/4

5.6÷ 3/8 – 3/8 ÷6

6.4/7 × 5/9 + 3/7 × 5/9

7.5/2 -( 3/2 + 4/5 )

8.7/8 + ( 1/8 + 1/9 )

9.9 × 5/6 + 5/6

10.3/4 × 8/9 - 1/3

1 1.7 × 5/49 + 3/ 14

12.6 ×( 1/2 + 2/3 )

13.8 × 4/5 + 8 × 1 1/5

14.3 1 × 5/6 – 5/6

15.9/7 - ( 2/7 – 10/2 1 )

16: 123

15: 125

120:26

156: 14

78: 13

15; 10

154: 169

125: 1 1

54: 14

154: 123

148: 15 1

154: 154

1452: 124

145:7

Give me some math problems in primary school. Xiaodong has three oranges, and he ate 1. How much is left?