Conversion of Common Units in Mathematics
Length unit conversion
1 km =1000m1m =1decimeter/decimeter =10cm1m =10cm/kloc-.
Area unit conversion
1 square kilometer = 100 hectare 1 hectare = 10000 square meter 1 square meter = 100 square decimeter.
1 dm2 = 100 cm2 1 cm2 = 100 mm2
Volume * * * Capacity * * Product unit conversion
1 m3 = 1000 cubic decimeter 1 cubic decimeter = 1000 cubic centimeter 1 cubic decimeter = 1 liter.
1 cm3 = 1 ml 1 m3 = 1000 liter
Weight unit conversion
1t = 1000kg 1kg = 1000g 1kg = 1kg。
Rmb unit conversion
1 yuan = 10 angle 1 angle = 10 point 1 yuan = 100 point.
The fifth grade mathematics handwritten newspaper map 1
In the fifth grade, the math handwritten newspaper is shown in Figure 2.
In the fifth grade, the math handwritten newspaper is shown in Figure 3.
Interesting olympiad math problems in grade five
1, his first job
"Ah! Johannes, "Joe met a young man in the street on Sunday and shouted to him," Long time no see, I heard you started working! "
"A few weeks," Johannes replied. "This is piecework, the effect is very good. I got more than forty dollars in the first week, and every week after that, I earned 99 cents more than the previous week. "
"What a coincidence!" Joe continued with a smile, "May you continue as always!" "
"I estimate that I can earn 60 dollars a week before long," the young man told Joe. "I have earned a full 407 yuan since I started working. This is really not bad! "
How much did Johannes earn in the first week?
2. Will they meet?
"Where are you calling from?" Bert asked. At the moment, he is in the office at the corner of Merton Street and Spokelous Street, listening to the phone and watching the traffic outside the window.
"At a telephone booth at the intersection of Dale Street and King Street," Ben replied weakly. "Go south for four blocks, and then go east for a few blocks!"
Bert rang the doorbell and shouted, "You start now and we'll meet halfway!" " "He put the phone down with a bang. Only then did he realize that he hung up too fast and didn't make it clear how to contact each other.
In fact, there are exactly 70 different routes between two intersections, and the choice between routes has nothing to do with distance.
So, how to understand the meaning of "several" in this sentence?