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The operation law of integer and fraction
Integer addition and subtraction: 1) align the same digits, and then add or subtract the numbers in the same counting unit; 2) advance to the first digit when the digit reaches ten. Integer multiplication: 1) from the right, multiply the number in each digit of the second factor by the first factor in turn, and the end of the number will be the same as the second one
Is the law of integer operation also applicable to fractions?
Applicable. The same applies to real numbers
RELATED INFORMATIONS
- 1. Take a closer look at each of the following formulas and calculate to see what you can find? （1）1／2×1／3＝1/6 1/2-1/3＝1/6 (2)1/3×1/4=1/12 1/3-1/4=1/12 . (5) What rules do you find through calculation? （6）1/2+1/6+1/12+1/20+1/30+1/42=? I am in a hurry!
- 2. Calculate the formula of each group and observe the relationship between each group. Please sum up this rule, (1) 4 times 9 and 4 times 9 (2) √ 16 times 25 and 16 times 25 (3) √ 0.01 times 0.04 and 0.01 times 0.04 (4) √ 1 / 4 times 16 of 9 and 1 / 4 times 16 of 9 (5) √ 2 × √ 3 = (6) √ a × √ B = [] Observe the relationship between each group and sum up the rule with formula
- 3. The division formula of derivative operation
- 4. The solution of linear equation with one variable There are 18 tigers and ostriches in the zoo, with a total of 44 feet. How many tigers and ostriches are there in the zoo? The solution of linear equation with one variable
- 5. More than 1000 off form calculation exercises in Grade 6
- 6. If the areas of two circles are equal, their circumference must be equal The circumference of a semicircle is half the circumference of a circle
- 7. Some circle problems! Write the formula! From 10 am to 2 pm, how many centimeters does the tip of the 1 cm minute hand on the watch turn? The circumference of the semicircle is 30.84 cm. What is its radius? How many centimeters of rope is required to tie two glass bottles with a bottom diameter of 5 cm together?
- 8. The problem of circle, the formula and the answer The area of a square is 20 square centimeters. What is the area of the largest circle in the middle of the square? Please be sure to calculate the side length. The formula must be listed!
- 9. (1) The volume of a cuboid water tank is 200 liters. The bottom of the water tank is a square with a side length of 50 cm. What is the height of the water tank? (the thickness of the water tank is ignored) (2) A square billet with an edge length of 6 decimeters is forged into a rectangular steel bar with a cross section of 6 square decimeters. How long is the steel bar? (3) A cuboid is 8 cm in length, 6 in width, and 5 cm in height. The sum of its edges is (?), its surface area is (?) square centimeter, and its volume is (?) cubic centimeter (4) The total edge length of a cube is 24 decimeters, the surface area is (?) square decimeters, and the volume is (?) cubic centimeters (5) If a pool can hold 30 cubic meters of water, then 30 cubic meters is not only the (?) of the pool, but also the (?) of the water (6) A cube with 4 edges can be made up of a cube with 8 cm edge length (Note: This is to fill in the blanks. You don't need to use the formula. The answer is OK.) I want to calculate the formula. If it's right, I'll definitely add points. When I write it, I'll indicate the number of questions The places that need to fill in the blanks. The ones that don't have to fill in the blanks are practical problems. The practical problems need to calculate the formula, and you can do as many as you can,
- 10. The speed of a, B and C is 30 meters, 40 meters and 50 meters per minute respectively. A and B set out in the same direction at the same time in a, C set out from B to catch up with a and B at the same time, and C took 10 minutes to catch up with B after catching up with a, then the distance between AB and B is______ ．
- 11. 1. How do 9, 4, 9 equal 24
- 12. Add four operation symbols 23 4 5 6 7 1 = 51 to the formula
- 13. In the "24 o'clock" game of mathematics, given four natural numbers, through the four operations of "addition, subtraction, multiplication and division", you can exchange the position of numbers, and add brackets at will, but each number can only be used once, so that the final number is 24. Now I give you four numbers 1, 5, 5, 5, please write a formula with the number of 24 according to the game rules of "24 o'clock"
- 14. Help me out 50 suitable sixth grade four mixed operation problems! Hurry! All the property has been given to you. Hope to speed up Fractions and integers
- 15. Urgent primary school fifth grade mixed operation 60! Do not four! The simpler the better!
- 16. A little more! At least 50 or so! Early reply! Better
- 17. Find 140 simple arithmetic problems in grade 4 of primary school
- 18. Seek 50 primary school sixth grade mixed computing problems, the best can be simple, the best not to score, good must add points Oh, 50 questions
- 19. Rational multiplication and division of mixed operations, calculation problems (- 13 / 2) × 2 / 3-0.5 × 2 / 7 + 1 / 3 × (- 13 / 2) - 5 × 0.5 (- 1 / 42) divided by (1 / 6-2 / 7 + 2 / 3-3 / 14) It's two calculation problems
- 20. Mixed operation of rational multiplication and division -3 + 5 divided by [(- 1 / 6) times (- 6)] =? It's urgent to ask for auspicious solution. If you fail the monthly exam tomorrow, you won't be alive