Mathematical formula 1, addendum+addendum = sum of grade one.
Sum = Appendix+Appendix
And then what? Appendix = another addend
Another addend = and? addend
2. Negative-negative = difference
Difference = minuend-minuend
Negative difference = negative
Subtraction = minuend-difference
Difference+Minus = Minus
3. The first digit of a number from the right is a number (indicating several 1).
The second place is ten. The third place is several hundred. (meaning hundreds)
Reading and writing are too high to be cold. Reading is to write China numbers, and writing is to write mathematical characters.
Write math words in front of each word and China numbers at the back of each word.
4. Where is it? ︸? The following is the total, which is calculated by addition. (+)
Are you online? ︸? The above is the solution part, which is calculated by subtraction. (-)
5. In other words, find the problem that one number is more (less) than the other.
The word "greater than" is preceded by a large number, the word "less than" is preceded by a decimal number, and greater than or less than is followed by a difference.
To find a big number, add, find a decimal, subtract, find a difference, subtract.
6. The hour hand on the clock face is short and the minute hand is long. When the minute hand points to 12, it is the whole hour, and when the hour hand points to the number, it is the time.
When the minute hand points to 6, it is half hour, and when the hour hand passes through the number, it is half hour.
Students, please remember that there are twelve numbers on the clock.
There are five squares between two numbers, and there are sixty squares in a week.
The hour hand turns a number for a while, and the minute hand turns a square for a minute.
Sixty minutes at a time, sixty minutes at a time.
When the hour hand just passes the number, it means it's time.
If you want to ask how many points you got, please look at the minute hand carefully.
7. Make up ten songs: children clap their hands, and everyone sings ten songs, nine for one, eight for two, seven for three, six for four, two or five for ten.
Ten-fold method: divide the decimal and round the large number. Division of large numbers and rounding of decimal places.
8. Graphic application problem: first find out the known conditions and problems, and then determine the addition and subtraction. Finally, remember to write an answer.
Find what a * * * is, sum, sum and add to find the original. (+)
Find what's left, what's left, what's left, what's left, what's the difference? Calculate by subtraction. (-)
9. Exchange the position of the addend, and the sum remains the same.
10, counting from the right, the first digit is one, and the second digit is ten.
1 1, 12, there are two tens in 20, or 20 ones in 20.
10 has 1 tens in 13 and 10, or 10 has10 ones.
14, minimum digits 1, minimum digits 10, maximum digits 9.
15, and the starting point on the scale is represented by 0.
16, the method of finding the adjacent number: add 1 to this number and subtract 1, and the result is its adjacent number. -
17. Find the number before 1 and the number after 1.
18, add 0 to any number to get this number, and subtract 0 from any number to get this number. One addend remains the same, the other addend increases by several, and the sum also increases by several; One addend remains the same, the other addend is reduced by a few, and the sum is also reduced by a few. 19, two identical numbers are subtracted, and the difference is 0.
20. The minuend is constant, and the greater the minuend, the smaller the difference; The minuend is a constant, and the smaller the minuend, the greater the difference.
Senior one math stereogram 1, rectangle has 4 sides, square has 4 sides, triangle has 3 sides.
2. At least 6 sticks with the same root can be placed in a rectangle.
3. Form a square with at least four identical sticks.
4. At least three identical sticks can be used to make a triangle.
5. Coins are round.
6. At least 8 small cubes can be combined into a big cube.
7. A cube has six faces, all of which are equal and all of which are squares.
8. A cuboid has six faces, two opposite faces and so on.
9. There are two planes above and below the cylinder, and the two planes are the same size.
Math exercises in Grade One: 1, ○△△△△△△△△△ _ _ _ _ _ _ _
2、 (2) 3、6、9、 12、( ) (3) 19、 17、 15、 13、( ) (4) 1、3、2、6、3、9、( )、( ) (5) 12、5、 13、5、 / kloc-0/4、5、( )、( ) (6) 1、4、7、 10、 13、( ) (7) 10、 1、9、2、8、3、7、4、( )、( ) (8) 5、 10、 15、20、( ) (9) 2、 6、 10、 14、 18、( ) ( 10)5、50、6、5 1、7、52、8、53、( )、( ) ( 1 1)5、8、 1 1、 14、 1 7、( ) ( 12)2、3、5、8、 13、( ) ( 13)4、8、 12、 16、( ) ( 14) 1、6、2、7、3、8、4、9、( )、( ) ( 15) 1、 2、3、5、8、 13、( ) ( 16)3、4、7、 1 1、 18、( ) ( 17)20、3、 19、6、 18、9、 17、 12、( )、( ) ( 18)* 1、2、4、7、 1 1、 16、( )
The number before 3 and 20 is (), and the number after 15 is ().
4. When waiting in line, there are 4 people in front of Xiaohua and 3 people in the back. 1 * * * There are () people.
① 18 is preceded by () and followed by (). ② The numbers adjacent to 15 are () and ().
③ The number greater than 12 and less than 17 is ().
1, Xiaojun made five paper boats, but four didn't. How many paper boats does Xiaojun want to make?
Xiaoming planted three pots of flowers (the first three pots, the second five pots and the third nine pots), and he wanted to give them to Xiaohong. How many flowers can I give Xiaohong at most? At least?
3, 10, one is () ten, there are () tens in 20, and there are (). There are () ten and () one in twenty miles.