What's the simple way to teach children the addition and subtraction method within 20
After taking a bath every night, ask the child to count his fingers and toes. Count his toes and fingers again. After a few days, the child will be bored and learn the addition and subtraction method immediately
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- 1. Application of addition and subtraction in grade one mathematics
- 2. How many addition and subtraction methods do you learn in grade one of primary school?
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- 11. Addition and subtraction within 1000 I borrowed 500 from my father, borrowed 500 from my mother, bought a pair of shoes, and used 970. The remaining 30 yuan, returned 10 yuan to my father, returned 10 yuan to my mother, I left 10 yuan, owed 490 yuan to my father, owed 490490 yuan to my mother, 490 yuan + 490 yuan = 980 yuan. Plus my 10 yuan = 990 yuan, where are the other 10 yuan---------------------------
- 12. The addition and subtraction of rational numbers in the first day of junior high school! 1. The value of a + B-C is equal to that of a + b-c A.a-(-b)-(-c) B.a-(-b)-(+c) C.a+(-b)-c D.a+(c-b) 2. Seek | 1 / 10-1 / 11 | + | 1 / 11-1 / 12 | + | 1 / 12-1 / 13 | + +|The value of 1 / 49 + 1 / 50 |
- 13. The addition and subtraction of rational numbers in the first day of junior high school Xiao Ming plans to do five math problems every day during the holiday. If he has more than one problem, he will write a positive number. If he has less than one problem, he will write a negative number. The number of problems in ten days is recorded as follows: 3.5, - 4.2, - 1.7,0, - 3.8,10. Q: how many math problems did Xiao Ming do in ten days?
- 14. Give me 10 ways of rational number addition and subtraction Give me 10 elementary one's rational number addition and subtraction method, 10 one variable linear equation It needs to be square
- 15. Addition and subtraction of rational numbers~ When a > 0, b > 0, then a + B = + (___ +___ ) When a > 0, b > 0
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