1, each copy × number of copies = total number of copies, total number of copies/number of copies = number of copies, total number of copies/number of copies = number of copies.

2.65438 multiple +0 × multiple = multiple, multiple ÷ 1 = multiple, multiple ÷ multiple = 1.

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 hours = total workload, total workload ÷ work efficiency = working hours, total workload ÷ working hours = work efficiency.

6. Appendix+Appendix = sum, and-one addend = another addend.

7. The minuend-subtrahend = difference, the minuend-difference = subtrahend, and the difference+subtrahend = minuend.

8, factor × factor = product, product ÷ one factor = another factor.

9. Divider = quotient, dividend = divisor, quotient × divisor = dividend.

: Calculation formula of primary school mathematical graphics

1, square c perimeter s area a side length perimeter = side length× 4c = 4a area = side length× side length s = a× a.

2. Cube V: volume A: side surface area = side length × side length× 6s table =a×a×6 volume = side length× side length× side length V = a× a× a.

3. rectangle c perimeter s area a side length perimeter = (length+width) ×2 C=2(a+b) area = length × width S=ab.

4. cuboid v: volume s: area a: length b: width h: height (1) surface area (length× width+length× height+width× height )× 2s = 2 (AB+ah+BH) (2) volume = length× width× height V=abh.

5 triangle s area a base h height area = base x height ÷2 s=ah÷2 triangle height = area x 2 ÷ base triangle base = area x 2 ÷ height.

6 parallelogram s area a bottom h height area = bottom x height s=ah.

7 trapezoid s area a upper bottom b lower bottom h height area = (upper bottom+lower bottom) × height ÷2 s=(a+b)× h÷2.

8 circle s area c perimeter π d= diameter r= radius (1) perimeter = diameter× π = 2× π× radius C=πd=2πr (2) area = radius× radius× π.

9 cylinder v: volume h: height s; Bottom area r: bottom radius c: bottom perimeter.

(1) Transverse area = bottom circumference × height.

(2) Surface area = lateral area+bottom area ×2.

(3) Volume = bottom area × height.

(4) Volume = lateral area ÷2× radius.

10 cone v: volume h: height s; Bottom area r: bottom radius volume = bottom area × height ÷3 Total number ÷ Total number of copies = average value.