12-7= 14-5= 4+9=
9+8= 15-5= 18-9=
59-9= 50+8= 10+40=
45-5= 30+5= 75-30=
57-40= 10+9= 20+5=
73-40= 19-9+3= 39-9+8=
15-8+2= 1 1-9+4=
Two. Fill in the blanks (33 points)
There are () tens in 1 and 80; The number consisting of four tens and eight ones is ().
2. Ten digits are 5, one digit is 0, and this number is (). () Ten is 100.
The tenth place of 3 and 34 is (), which means () ten places; Its unit is (), which means () is one.
4. Starting from the right, the first position is (), the first position is ten, and the third position is ().
The number before 5 and 74 is (), and the number after it is ().
6. Line up these numbers in descending order: 76, 25, 60, 19, 100, 82, 46. ()& gt()& gt()& gt()& gt()& gt()& gt()
7. Fill in the figures according to the law
( 1)2、4、6、()、()。
(2)40、35、30、()、()。
8. Write two addition formulas and two subtraction formulas with three numbers of 30, 8 and 38.
________________________ ________________________
9. Fill in ">" in ○. , "<, or" = "
70-30○30、60○67-7、80- 10○70-30
78○69、99○ 100、78○78
Three, formula and the number of line segments (4 points)
7-3 20+9 50+6 87-7 56 29 80 4
Please calculate and fill in: (8 points)
There are () □, () δ, () χ and () in this small train.
5. Tick "√" (9 points) under the answer you think is appropriate.
1, there are 40 pears, and the number of apples is much less than pears. How many apples may there be?
18, 28, 48
There are 47 people in Class 3 (5) going for a spring outing. Which bus is more suitable?
40, 50, 30 seats,
(Plane: 75 yuan) The price of a car is cheaper than that of an airplane. How much will it cost?
73 yuan, 57 yuan, 22 yuan, 60 yuan
Six, the text narrative questions (4 points)
1. One addend is 50, the other is 6, and what's the sum?
What's the difference between 2.65 minus 5?
Seven, solve the problem (22 points)
1. Auntie bought 10 meter of cloth, and it took 8 meters to make clothes. How many meters are left? .
□○□=□
2, there are 50, there are 30, and there is a * * * How many?
□○□=□
3. There are 15 red goldfish and 6 flower goldfish in the goldfish bowl. How many goldfish will you buy?
□○□=□
4. There are 30 people in the art group, 20 girls and how many boys?
□○□=□
There are 48 TV sets in the shop. Eight TV sets have been sold, how many are left?
□○□=□
6, Xiaoming 65 times
Xiaohong 40 Xia
Xiaohua 30 Xia
How many times does Xiaoming take pictures than Xiaohua?