What are the key points to review for Grade 6 Math?

Primary school math focuses on memorizing formulas:

The area of the triangle is 2 at the base. Formula s= a h 2

The area of the square side length side length The formula s= a a

The area of the rectangle is length and width of the formula s= a b

The area of the parallelogram is the base height of the formula s= a h

The area of the trapezoid (upper bottom + lower bottom) is high 2 and the formula is s=(a+b)h2

Sum of internal angles: The sum of the internal angles of the triangle is 180 degrees.

The volume of the box Length, Width, Height, Formula: v=abh

The volume of the box (or cube) Base Area High Formula: v=abh

The volume of the cube edge length edge length edge length Formula v=aaa

The circumference of the circle diameter formula: l d 2 r

The area of the circle radius radius formula: s r2

Surface (side) area of the cylinder: The surface (side) area of the cylinder is equal to the perimeter of the base surface multiplied by the height. Formula: s=ch= dh2rh

Surface area of the cylinder: The surface area of the cylinder is equal to the circumference of the base multiplied by the height plus the area of the circle at both ends. Formula: s=ch+2s=ch+2 r2

Volume of the cylinder: The volume of the cylinder is equal to the base area multiplied by the height. Formula: v=sh

The volume of the cone 1 3 The bottom area is high. Formula: v=1 3sh

The law of addition and subtraction of fractions: the fractions with the same denominator are added and subtracted, and only the numerator is added and subtracted, and the denominator remains unchanged. Fractions with different denominators are added and subtracted, first through the fractions, and then added or subtracted.

Multiplication of fractions: use the product of the numerator as the numerator and the product of the denominator as the denominator.

The division of fractions: dividing by a number is equal to multiplying by the reciprocal of that number.

Unit conversion 1) 1 km 1 km 1 km 1000 m 1 m 10 dm 10 dm 10 cm 1 cm 10 mm.

2) 1 square meter, 100 square decimeters, 1 square decimeter, 100 square centimeters, 1 square centimeter, 100 square millimeters.

3) 1 cubic meter, 1000 cubic decimeters, 1 cubic decimeter, 1000 cubic centimeters, 1 cubic centimeter, 1000 cubic millimeters.

4) 1 ton 1000 kg 1 kg = 1000 g = 1 kg = 1 city catty.

5) 1 hectare 10,000 square meters 1 acre square meter.

6) 1 liter, 1 cubic decimeter, 1000 ml, 1 milliliter, 1 cubic centimeter.

Quantitative relationship calculation formula.

1 Unit Price Quantity Total Price.

2 Unit Yield Quantity Total Yield.

3 Speed Time Distance.

4 Ergonomics, Time, Total Work.

If you remember the formula, you won't be afraid of exams.

Usually learn the basics well, and there is nothing special to memorize about the concepts! Read more questions and master different question types!

The Grade 6 Math exam focuses on:

1. Multiplication of fractions.

The meaning of fractional multiplication is the same as that of integer multiplication, which is to find the simple operation of the sum of several mutually pampered and added numbers.

2. The calculation rules of fraction multiplication.

Multiply the fraction by the integer, use the numerator of the fraction and the product of the integer multiplication as the numerator, and the denominator remains unchanged; Multiply fractions by fractions, use the product of the multiplication of the numerators as the numerator, and the product of the multiplication of the denominator as the denominator. But the numerator denominator cannot be zero.

3. The meaning of fraction multiplication.

Multiplying fractions by integers has the same meaning as integer multiplication, which is a simple operation to find the sum of several identical additions. Multiplying a number by a fraction can be seen as finding the fraction of the number and how much is matched with the sliding circle.

4. Multiply fractions by whole numbers.

Combination of numbers and shapes, transformation and naturalization.

5. Countdown. Two numbers whose product is 1 are called reciprocal to each other.

6. The reciprocal of the score.

Find the reciprocal of a fraction, e.g. 3 4 swap the numerator and denominator of the fraction 3 4, and use the original numerator as the denominator and the original denominator as the numerator. 4 is the reciprocal of 4 3, or 4 3 is the reciprocal of 3 4.

7. The reciprocal of an integer.

Find the reciprocal of an integer, such as 12, turn 12 into a fraction, that is, 12 1, and then swap the numerator and denominator of the fraction 12 1, and use the original numerator as the denominator and the original denominator as the numerator. is 1 12, and 12 is the reciprocal of 1 12.

8. The reciprocal of the decimals.

Ordinary algorithm: find the reciprocal of a decimal place, for example, turn into a fraction, that is, 1 4, and then swap the numerator and denominator of the fraction of 1 4, and make the original numerator the denominator and the original denominator the numerator.

9. Use the 1 calculation method.

It is also possible to divide the bend by 1 by this number, e.g. is equal to 4, so the reciprocal of 4, because the product of 1 is the reciprocal of two numbers. Fractions and integers also use this rule.

10. Fraction division.

Fractional division is the inverse of fractional multiplication.

I think it's better to review the basic knowledge in the book first, and when reviewing, connect it with the questions you usually do, especially the ones you have done wrong, and think about why you are wrong, which is related to the knowledge point in the basic knowledge of the current review.

Then, take a closer look at the mistakes you have collected (it is recommended that you collect the questions that you usually make mistakes together to form a set of mistakes, and keep making fewer mistakes, and you will improve).

There is also the need to classify the application questions, understand each type of question you have learned (engineering problems, itinerary problems, etc.), and consider the difficulty, first understand the ordinary difficulty of the questions, and then gradually increase the difficulty, otherwise, when you see a little more difficult during the exam, you will feel empty. When appropriate, you can also look at the Olympiad questions to increase your knowledge and train your thinking.

The last point, and the most crucial point, is to be careful and not a little sloppy. The difficulty of the questions in primary school is actually not very large, and the main thing is to be careful.

Understand each knowledge by doing questions.

The only way to learn mathematics is to do more questions and then classify one type of question type.