Math oral calculation problems in grade one
First-year math oral examination questions 1
7+5=2+8=9+6=7-3= 19-9= 4+8= 10+6=9-7=5+8=9-4= 1 1- 10=7-7=6+9= 12-2=8+6= 2+9=7+5= 13-2=3+9=4+7= / kloc-0/0+4=4+8=6+7 =9+4=8-3= 0+6=5+8=3+7=9+8= 10-5= 10+8= 12+6=8+5= 19-7=5+7= 3+5=8-3=3+6=9-6= 10-8= 1 0+6= 12+3= 17-7= 18- 10= 16+3=
Math oral calculation problem 2 in grade one
10-6= 15-5= 10+6= 16- 10=6+8= 5+7= 10-7=5+8= 13+6= 19-6= 4+9= 13+5= 18-5=7+ / kloc-0/0= 19-65438+ 00= 13-3= 15+3=5+9= 19-6= 10-6= 14-3= 12+4= 16-6= 10+9= 1 9-6= 13+5=8+7=8-6=6+ 10=9+4= 1 8-5=7+4= 13+3=4+9=6+8= 10+5= 16-6=9+3=6+ 10= 10-4= 1 1+8= 13+2= 18-6= 15- 10=3+8= 3+() = 12()-6=2()+3=95+()= 13 4+()= 13 5+8-2=9-5+9=3+3+7=3+8+5=6+7-3=
Math oral calculation problem 3 in grade one
2+6= 9-7= 3+2= 3+4= 5+4= 3+5= 7+ 1= 9-3= 8-3=5 5-4= 8-2= 0+8= 3+ 1= 6+ 1=7 7+3= 10-2= 7-2= 6-4= 9-2= 1 0-9= 5+5= 5+2=7 9-4= 8+ 1= 2- 1= 4+6= 2+7= 9-5= 3+3= 4-2= 10-4= 1+2= 5-3= 0+8= 10-7= 2+4= 6-5= 4+4= 5- 1 = 1+9= 8-4= 6+0= 3-3= 1 +5= 10-5= 1+ 1= 8+ 1= 4- 1= 9-3= 3+6=
Summary of error-prone knowledge points in the second volume of senior one
First, the first grade math mistakes 1:
Title:
There are three apples, five pears and eight bananas. Xiao Fang can choose two kinds of fruits. What can she get at most () or at least ()?
Example of error:
There are three apples, five pears and eight bananas. Xiao Fang can choose two kinds of fruits. She can get at most (16) and at least (3).
Guide to analysis and methods:
Let the children talk about what fruits are the most, what fruits are the least, which two fruits are more and which two fruits are less, and then emphasize that only two fruits can be selected. When thinking about two questions, may I ask? You don't choose which fruit to let the child tell the reason. Children can be properly guided to distinguish which two fruits are more and which two fruits are less. Finally, it is concluded that to solve the problem of how much you can take is to choose more and two kinds of fruits, not the least, and to solve the problem of how much you can take is to choose less and two kinds of fruits, not the most.
Second, the first grade of primary school mathematics is easy to make mistakes 3:
Title:
In the queue, there are four people in front of Xiaohua, three people behind Xiaohua, and one * * * has () people.
Example of error:
When waiting in line, there are four people in front of Xiaohua, three people behind Xiaohua and one * * *(7) person.
Guide to analysis and methods:
This is a very familiar life scene. One child can be Xiaohua, four in front and three in the back. This team can be divided into several parts, which parts are easy for children to forget Xiaohua. After the children confirmed that it can be divided into Xiaohua in front and Xiaohua in Obana in the back, it is not difficult to list the addition formula of 4+3+ 1, so it is concluded that there are 9 people in * *.
Third, the first grade of primary school mathematics is easy to make mistakes 4:
Title:
Eight children played hide-and-seek, and two children have been caught, and () children have not been caught.
Example of error:
Eight children played hide-and-seek games, two children have been caught, and (6) children have not been caught.
Guide to analysis and methods:
Let the children know the rules of the game first. How many of the eight children are caught and how many are hidden? Then, according to the two children who have been caught, we can remove two from the total number of hidden children and leave five, so that five people are not caught.