The complete version of primary school mathematical formula can be printed (3 pieces) (1 piece) 1. The problem of planting trees on unclosed lines can be mainly divided into the following three situations:
(1) If trees are planted at both ends of the non-closed line, then:
Plant number = number of nodes+1 = total length ÷ plant spacing-1 total length = plant spacing × (plant number-1) plant spacing = total length ÷ (plant number-1)
⑵ If you want to plant trees at one end of the non-closed line and not at the other end, then: number of plants = number of segments = total length/plant spacing = plant spacing × plant spacing = total length/plant spacing.
(3) If no trees are planted at both ends of the closed line, then: number of plants = number of segments-1 = total length ÷ plant spacing-1 = total length × (number of plants+1) plant spacing = total length ÷ (number of plants+1).
2. The quantitative relationship of tree planting on the closed line is as follows:
Plant number = number of segments = total length/plant spacing = plant spacing × plant number = total length/plant number
3. (Profit+Loss) ÷ Difference between two distributions = number of shares participating in distribution (big profit-small profit) ÷ Difference between two distributions = number of shares participating in distribution (big loss-small loss) ÷ Difference between two distributions = number of shares participating in distribution.
The complete version of primary school mathematics formula can be printed (3 sheets) (2 sheets) 1, square.
Perimeter area side length
Perimeter = side length ×4C=4a
Area = side length × side length S=a×a
2. Cubic
Volume a: edge length
Surface area = side length × side length× 6s table =a×a×6
Volume = side length × side length × side length v = a× a× a.
3. rectangular
Perimeter area side length
Circumference = (length+width) ×2C=2(a+b)
Area = length × width S=ab
4. Cuboid
V: volume s: area a: length b: width h: height.
Surface area (length× width+length× height+width× height )× 2s = 2 (AB+AH+BH)
Volume = length× width× height V=abh
5. Triangle
S area a bottom h height
Area = bottom × height ÷2s=ah÷2
Height of triangle = area ×2÷ base.
Triangle base = area ×2÷ height
6. Parallelogram
S area a bottom h height
Area = bottom × height s=ah
7. trapezoidal
Height of upper bottom b and lower bottom h in s area a
Area = (upper bottom+lower bottom) × height ÷2s=(a+b)×h÷2.
8, round
Area c perimeter πd= diameter r= radius
Circumference = diameter ×π=2×π× radius C=πd=2πr
Area = radius × radius× π
9. Cylinder
V: volume h: height s; Bottom area r: bottom radius c: bottom perimeter
Transverse area = bottom circumference × height.
Surface area = side area+bottom area ×2
Volume = bottom area × height
Volume = transverse area ÷2× radius
10, conical
V: volume h: height s; Bottom area r: bottom radius volume = bottom area × height ÷3
The formula of sum difference problem (sum+difference) ÷ 2 = large number (sum difference) ÷ 2 = decimal.
The formula sum of sum and multiple problem ÷ (multiple-1) = decimal.
Decimal × multiple = large number (or sum-decimal = large number)
The formula of differential multiple problem is differential ÷ (multiple-1) = decimal.
Decimal × multiple = large number (or decimal+difference = large number)
The complete version of primary school mathematics formula can be printed (3) (3) 1, and each copy × number of copies = total number.
Total copies/number of copies = number of copies
Total copies/number of copies = number of copies
2, 1 multiple× multiple = multiple
Multiply1Multiply = Multiply
Multiply/Multiply = 1 Multiply
3. Speed × time = distance
Distance/speed = time
Distance/time = speed
4. Unit price × quantity = total price
Total price/unit price = quantity
Total price ÷ quantity = unit price
5. Work efficiency × working time = total workload.
Total amount of work ÷ work efficiency = working hours
Total workload ÷ working time = working efficiency
6. Appendix+Appendix = Total
And-one addend = another addend
7. Negative-negative = difference
Negative difference = negative
Difference+Minus = Minus
8. Factor × factor = product
Product ÷ One factor = another factor
9. Dividend bonus = quotient
Dividend = divisor
Quotient × Divider = Divider