1. Math homework for the third grade of primary school
1, write directly. 840÷4= 220×40= 303÷3= 30× 15= 0÷ 180=
323÷4≈ 359÷6≈ 103÷2≈ 9 1× 18≈ 28× 12≈
2, column vertical calculation, check with※.
456÷3= 57×26= ※783÷6=
42×43= 209÷3= ※676÷4=
3. Off-mold calculation.
(390+30)÷7 2340-227 5×38 465+205÷5
4, column calculation
(1) The divisor is 8, the quotient is 75, and what is the dividend?
(2) What is the sum of 43 plus 52?
(3) What is half of the sum of 76 and 104?
(4) The number A is 145, which is five times that of B. What is the sum of the numbers A and B?
2. Math homework in the third grade of primary school
1, Xiaoming's thumb nail area is about 1 (). 2. The cover area of the exercise book is about 3 (), and its bust is 6 ().
3. The desktop area is about 30 (), and the leg length is 10 ().
4. Make a big square with four squares, with an area of 1 cm2. The circumference of this big square is ().
5. The area of a square colored paper is 64 square decimeters, and its change is ().
6. A rectangle with an area of 80 square meters, with a length of 5 meters and a width of ().
7. A rectangle with a circumference of 56m, a length of10m and a width of ().
8. A square with a side length of 1m has an area of 1 (), which is also 100 ().
9. 1 10 square meter = () square decimeter
10, 10000 square centimeter = () square decimeter = () square meter.
1 1, a plastic film with a length of 300 cm and a width of 200 cm, with an area of () square meters.
12, book 8 () thick, classroom door 200 () high.
13, a building covers an area of 200 ().
3. Math homework in the third grade of primary school
Starlight Primary School 1, 832 students visited the Planetarium in four batches. How many people are there in each batch on average? 2.562 students visited the exhibition of cloned mice in four batches. How many people are there in each batch, and how many people are left?
3. The Olympic torch will travel 8 16 kilometers in a certain place in 4 days. How many kilometers are delivered on average every day?
There are 530 chairs, which will be shipped in five times. How many pieces are shipped at an average time? What if the goods are delivered in four installments?
27. The school bought 643 pots of flowers and put them in five flower beds on average. How many pots have been put in each flower bed on average, and how many pots are left?
5. The anchor time of a TV station for four months is 340 hours for news, 0/80 hours for sports, 0/20 hours for cartoons and 240 hours for TV series. If the same program is broadcast at the same time every month, how long will each program be broadcast every month?
Three teachers took 50 students to visit the botanical garden. Admission price: adult 10 yuan, child 5 yuan, group 6 yuan (10 or more). How to buy a ticket is appropriate?
7. A meadow is as big as a classroom and produces enough oxygen for three people a day. There are 120 people in our class. How many pieces of grass this big can produce enough oxygen for the third grade students?
8. Xiaoming's home is 450 meters away from school. He walks to school for about 8 minutes every day. How many meters does he walk per minute?
9. 225 students in Grade Three will take five buses for a spring outing. If there are the same number of people in each car, how many people should each car take?
10, a little macaque pictorial 4 yuan, a fairy tale 48 yuan, a juvenile encyclopedia 98 yuan.
(1) How much is the price of a juvenile encyclopedia about several times that of Little Macaque?
(2) What books can I buy for100 yuan?
4. Math homework in the third grade of primary school
1. There are 65 peach trees in the orchard. There are three times as many apple trees as peach trees. How many peach and apple trees are there? Grade three students go to work on the farm. Girls went 156, boys went 124, and four people were divided into a group. How many groups can a * * * be divided into?
The students are planting trees on the hillside. In the third and fourth grades, 207 trees were planted. The number of trees planted in the fourth grade is twice that in the third grade. How many trees were planted in the third grade? How many trees were planted in the fourth grade?
4. Xiaojun has read the story book and has read 84 pages. There are twice as many pages left as you have read. If you want to read the remaining pages in 8 days, how many pages will you read on average every day?
Mr. Zhang and Mr. Wang took 36 students to the exhibition. The fare is one adult and half a child. They are a * * *, how much is it?
5. Math homework in the third grade of primary school
1. The school bought 15 boxes of colored chalk, each containing 50 pieces, and used 10 boxes. How many useless branches are left?
2. Workshop 1, Workshop 2 and Workshop 3 of Haitian Machinery Factory each produce 6 boxes of parts, each box 120. How many pieces did a * * * produce?
3. One loom weaves 265,438+0 meters in one hour. How many meters do four identical looms weave in five hours?
The bus travels from Nanjing to Shanghai at a speed of 60 kilometers per hour, and it takes half the journey in three hours. Because one person in the car is ill, the rest of the journey will take 2 hours. How many kilometers per hour on average?
5. Master Liu processed 4,255 parts in 23 days, and Master Wang processed more than Master Liu every day on average 18. How many parts does Master Wang process every day?
6. A cow in Uncle Li's family eats 50 kg of grass 10 day. According to this calculation, how many days can 155 kg of grass feed this cow?
7. lakeside park cruise ship 18, daily income 1008 yuan. According to this calculation, there are now 26 cruise ships, how much income will be increased every day?
8. The factory has to process 360 parts, and Wang Can Jr. finished it in five days. How many parts can he process in eight days at this speed?
9. I obviously read a story book, reading 20 pages a day and reading half in five days. How many pages are there in this book?
10, the teacher bought six pens, the price is three times that of ballpoint pens, and the price of ballpoint pens is 2 yuan. How much did the teacher spend on this pen?