Fourth Grade Mathematics Mid-term Test Paper
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Knowledge of large numbers
2004 61108647
Read as: 204,611,108,647
808090904040
Read as: 808 billion, 90,904,040
decimal notation
ten ten thousand is one hundred thousand
ten one hundred thousand is one million
ten million is ten million
ten ten million is one hundred million
ten one hundred million is one hundred million
ten billion is ten billion
ten billion is one hundred billion
The counting method in which the rate of progress between every two adjacent counting units is ten is called decimal counting.
Hectares and square kilometers
1 hectare = 10000 square meters
630000 square meters = 60 hectares
1. Under what circumstances can the square meter be used as the unit
Classroom Basketball Court Soccer Field Swimming Pool Living Room Room Door Window
2. Under what circumstances can the hectare be used as the unit
park square large school garden
Measurements of angles
Straight line, ray, line segment, straight angle, circumferential angle, measuring angle, drawing angle
What angles have we learned?
Acute angle: an angle less than 90° (less than a right angle)
Obtuse angle: An angle greater than 90° but less than 180°
Right angle: an angle equal to 90°
Straight angle: an angle equal to 180°
Circumferential angle: an angle equal to 360°
Three digits times two digits
Calculate the following questions vertically to see who can calculate faster and better:
263×82=813×35=
First multiply the three-digit number by the ones digit of the two-digit number, and the last digit of the number is aligned with the ones digit of the two-digit number; then multiply the three-digit number by the number in the tens digit of the two digits, and the end digit The digits are aligned with the tens digit of a two-digit number; the products of the two multiplications are then added.
Unit price, quantity and total price
Solve the problem
1. Buying 7 footballs with a unit price of 58 yuan, how much did you spend in total?
Quantity relationship: unit price × quantity = total price
Calculation formula: 7 × 58 = 406 (yuan)
Answer: A total of 406 yuan was spent.
2. The unit price of a box of pencil leads is 3 yuan. How many boxes of such pencil leads can be bought in total for 81 yuan?
Quantity relationship: total price ÷ unit price = quantity
Calculation formula: 81 ÷ 3 = 27 (box)
Answer: 81 yuan can buy a total of 27 boxes of such pencil leads.
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