Intensive Training of Maths(3B)

河南鄭州市惠濟(jì)區(qū)實驗小學(xué) 陳金金

I. Calculate.

II. Fill in with “mm” “cm” “dm” “m” or “km”.

1. The length of a pencil is about 25 _____ .

2. The height of a door is about 2 _____ .

3. The height of a chair is about 12 _____ .

4. The thickness of a 5-jiaocoin is about 2 _____ .

5. The depth of a paper cup is about 1 _____ .

6. A 10-year-old boy can be 130 _____ tall.

7. The distance between Beijing and Wuhan is about 1055 _____ .

8. The width of 10 pieces of A4 paper is about 1_____ .

9. The length of a car is about 35 _____ .

10. The length of a classroom is about 10 _____ .

III. Fill in the blanks.

1. “ _____ ” is short for centimeter.

2. “ _____ ” is short for decimeter.

3. “ _____ ” is short for millimeter.

4. “ _____ ” is short for meter.

5. “ _____ ” is short for kilometer.

6. “ _____ ” is short for kilogram.

7. “ _____ ” is short for gram.

8. “jin” is a unit of weight in China. _____gis equal to 1jin.

9. 1kgis equal to _____jin.

10. 4 tons is equal to _____kg.

IV. Solve the problem by making a table.

1. Jim needs 15kgof rice to make meals for one month. How much rice does he need to make meals for one year? (Draw pictures or diagrams to solve the problems.)

2. David can finish reading 45 pages each day. Here’s a book of 186 pages. In how many days will he finish reading the book?(Draw pictures or diagrams to solve the problems.)

3. Mary’s mother went shopping yesterday afternoon. She bought 15kgof rice, 10kgof potatoes, 2kgof eggs, 4kgof tomatoes,3kgof fish and 1 kg of salt. The rice is 4yuanperkg. The potatoes are 2yuanperkg. The eggs are 6yuanperkg. The tomatoes are 3yuanperkg. The fish is 13yuanperkg. The salt is 3yuanperkg. How much did she pay for them in total?

4. A, B and C are friends. A goes to the library every three days. B goes to the library every four days. C goes to the library every five days. Today, they happened to meet each other in the library.In how many days will they meet again in the library?

5. Here are 3 boys. They are A, B and C. A runs 3 meters per second,B runs 4 meters per second, and C runs 2 meters per second. The three boys start to run in the same direction from the starting line,along the 600-mcircular track. How much time will it take to get to the starting line at the same time for the three boys?

6. You can pay 10yuanfor 5kgof cabbages. Here are 16,000gof cabbages. How much do you have to pay for them?

7. At a shop, 1m2dmof a cloth is 6 yuan. To buy 6m of the cloth,how much do you have to pay?

8. The perimeter of a big table is 15m, with the length of 5m20cm.What is the width of this table?

9. The figure below is made of 16 small squares with the length of 2cm. Find the perimeter of the figure.