Solving equations in Grade 6 (60 questions)

Solving equations in Grade 6 (60 questions)

200 questions, each question separated by two blank lines
Example: 5.2 + 20x = 105.2
1.3+x=2.3
It's just an example. It's a little more difficult

There are 56 red, blue and white glass balls of the same size, arranged in the order of 2 red balls, 3 basketball balls and 4 white balls. How many blue glass balls account for the total number
What's the percentage?

2+3+4=9
56=6x9+2
So the number of blue glass balls is: 6x3 = 18
18/56=9/28
So the number of blue glass balls accounts for 9 / 28 of the total

How many grams of milk is 1 ml milk

A bag of milk, the volume is 486ml, the weight is 500g
The weight of 1 ml milk is 1.0288 grams

Write five English marked words
[au]：
[ð]

Choose C
[au]：how out borrow about amount
[ð]:although another other there that this

Ninth grade chemistry calculation problem, online and so on!
40g of copper oxide sample with impurities, after adding dilute sulfuric acid for complete reaction, 368g of de dilute sulfuric acid is used together, and 8g of filter residue is obtained by filtration (impurities are insoluble in water and acid, regardless of the loss in the experiment)
① The mass fraction of CuO in CuO sample
② Mass fraction of solute obtained after reaction

CuO+H2SO4=CuSO4+H2O
So the mass of CuO in the sample is 40-8 = 32g
① Mass fraction of CuO in CuO sample: 32 / 40 = 80%
Let the mass of CuSO4 be XG
CuO+H2SO4=CuSO4+H2O
80,160
32g.xg
80/32g=160/xg
x=64g
Mass of solution after reaction: 40 + 368-8 = 400g
② Mass fraction of solute obtained after reaction: 64 / 400 = 16%

How much is a liter of diesel equal to

1 L * 0 # diesel 0.84 density kg / L = 0.84 kg
So 1 liter diesel = 1.68 kg = 3.36 kg

Mathematics test paper for grade one volume two

The first grade mathematics final examination paper 1, fill in the blank question (1-3 each question 1 points, 4 small questions 2 points, 5-8 each question 3 points, 9-10 each question 4 points, 11-12 each question 5 points, 13-15 each question 6 points, 16 small questions 8 points, 17 small questions 9 points, a total of 70 points) 1.56 read as (). 2.78 write (). 3.25 read as (). 4. (1) ten

Simple calculation of 2.78 * 7.8 + 2.78 * 3.2-2.78

Extract the common factor, the above formula is equal to 2.78 * (7.8 + 3.2-1) = 27.8

How many kilos of material are used for aluminum alloy with width of 8.5 and thickness of 1.1 per square meter? How many kilos are used for aluminum alloy with thickness of 0.9?

0.0085x0.011 х 2700 = 0.25kg/m2
0.0085x0.009x2700 = 0.21kg/m2