65438+
Fill in the blanks 1. Look at the following questions and write a two-step calculation formula as required.
( 1)6×7=42,42- 15=27
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(2) 15+9=24,24÷4=6
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2. Mom bought three bundles of pencils, 8 pencils in each bundle, and gave them to her sister. 12 pencils. How many pencils are left?
This problem must be calculated first _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.
3. In the problem of 12+42÷6, () should be calculated first, then ().
4. In the formula with brackets, () should be calculated before ().
5. Seven sixes are (), and the sum of twenty-five is ().
6.30 MINUS 35 and then divided by 7, the difference is ().
7. In the problem of 52+8×7, there are both () and (), so the method () should be calculated first, and then the method () should be calculated.
8. Senior two, girls 13, boys 17, * * * has students (). If you do the experiment in groups of five people, you can divide it into () groups. The comprehensive formula is ().
Second, the judgment question.
1, 5 children origami cranes, 9 each, now need to fold 100, how many more? The formula is (100-5)×9 ()
2、50-30÷5=20÷5=4()
3. Change 3+5=8 and 8×4=32 into a two-step calculation formula, which is 3+8×4 ().
2. The third grade primary school winter vacation math counseling topic 2
1. Multiple choice questions: (fill in the serial number of the correct answer in brackets). 1, the number of days in the first quarter of 2005 is ()
①90 days ②9 1 day ③89 days ④92 days.
2, a kind of 40 ()
1 min 2 seconds 3 hours
3, the movement of the electric fan belongs to ()
① Translation ② Rotation
4. When the divisor is a two-digit number, the remainder is ()
①89②90③98
Second, solve the problem.
1, Xiao Ming walks from home to the supermarket, walking 66 meters per minute and arriving in 8 minutes. It took six minutes to go back the same way. How many meters did you walk every minute when you came back?
2. There are 6 classes in the third grade of Limin Primary School, with an average of 47 students in each class. Mineral water 12 boxes, each containing 24 bottles. If one person shares a bottle, is it enough?
The road team had to build a 40-kilometer-long road and walked 8 kilometers in 2 days. How many times has the remaining length been repaired?
4. Uncle Wang of the garden team sprayed 820 trees from 8 am to noon 12. How many trees does he spray per hour on average?
5, mom bought 126 eggs, if everyone eats 2 eggs a day. How many days will these eggs last for his family?
6. The school general affairs office spent 1.500 yuan bought 18 sets of the same electrical appliances. What kind of electrical appliances might the school general affairs office buy?
3. Special Topic 3 of Mathematics Tutoring in Winter Vacation of Grade Three in Primary School
I. Application problems 1. The school bought a batch of balls, borrowed 14, and left 16. Put these balls in five boxes evenly. How much is put in each box?
2. The washing machine factory produced 2000 washing machines in the first quarter, 620 in June, 580 in February, and how many in March? (Answer in two ways)
Second, the oral calculation questions
76-47=? 2000-57= ? 1000-9=
100-56= 2000+ 1500= ? 800+ 1600=
46+30= ? 60+70= ? 520-60=
5 1+28= ? 100-90= ? 690+ 170=
300-67= ? 1000-90= 850-500=
43- 15= ? 400+4300= ? 1000- 1=
24+39= ? 270+ 160= 4300+700=
4. Mathematics Tutoring Topics for Winter Holidays in Grade Three of Primary School 4
1. The playground of Xiangyang Primary School is rectangular, with a length of100m and a width of 65m. Xiao Qiang ran around the playground twice. How many meters did Xiao Qiang run? 2. There are 3 students1person and 2 teachers. Each ship is limited to four people. How many boats should I rent at least?
3. A pair of China chess 16 yuan, a pair of checkers 12 yuan, and a pair of Go is three times the sum of a pair of China chess and a pair of checkers. Xiao Ming takes 80 yuan, is it enough to buy a pair of Go?
The students proposed to donate 400 books to "Hand in Hand" school. 58 books were donated from grade one to grade six. How many books do I have to donate to reach 400?
5.30 students, coming 15 students. There are five students in a row. How many rows can they line up?
6. Make a square with a 36 cm iron wire. How long are the sides of this square?
7. A rope is 25 meters long. Cut 10 meter first, and make a short skipping rope every two meters for the rest. How many short jump ropes can you make? How many meters are left?
8. A rope is 5 times 45 meters, and a wire is 7 times that of this rope. How long is this wire?
9. The supermarket sold 153kg of rice in the morning, and there were 56 more bags in the afternoon than in the morning. How many bags of rice did the worker sell today?
10. 32 white rabbits and 26 black rabbits were raised in the feeding group. The number of grey rabbits is less than the total number of white rabbits 18. How many gray rabbits will you raise?
5. The third grade primary school winter vacation math counseling topic 5
1, the thickness of a 1 cent coin is about1(); A car travels 80 miles an hour;
Xiao Ming is 124 () and weighs 36 ().
2. Exchange the position of the addend in the addition formula, and () remains unchanged.
3. Use the remainder to calculate the division, and the remainder is less than ().
4. Xiaohua has to walk to school 15 minutes. He must arrive at school at 7: 35 every morning. He should leave home before ().
5. When adding and subtracting within 10000, be sure to align () before adding and subtracting.
6. Square nursery with a circumference of 60 meters and a side length of () meters.
7. Make a rectangle with a thread, which is 8 cm long and 6 cm wide. This wire is 10 cm long.
8. There are () big squares on a clock face, and each big square is divided into () small squares. The minute hand is from 6 to 9, which is () minutes.
9. There are 7 days in a week and 30 days in September, which are () weeks and 0 () days.
10,2000 kg = () tons
5 kilometers +2000 meters = () meters 5 hours = () minutes.