Decimal 1
2.8 + 5.3
8.1
0.35 x 4.6
1.61
43.2➗4
10.8
8.64 ➗ 36
0.24
When x = 2.5, find the value of 18x - 8x.
25
0.95 + 0.5
1.45
0.81x50x0.07
2.835
8.4 is ( ) times 0.1
84
25 times a number is 12.5. What is the number?
0.5
When a = 0.5 and b = 0.6, find the value of 3.5a x 8 + 75b ➗ 15。
11
The sum of number A and number B is 3.45. Number A is 1.5, what is number B?
1.95
James used 40 yuan to buy eight 0.33-litre bottles of Sprite at 3.20 yuan per bottle. How much change should he get?
14.4 yuan
6 times a number is 128.4. What is the number?
21.4
The difference between 53.8 and 53.26 is divided by 54. What is the quotient?
0.01
A coat costs x yuan and a pair of trousers costs y yuan. How much does it cost to buy 3 suits each consisting of a coat and a pair of trousers?
3x + 3y
Number A is 6.9, which is 0.9 more than twice Number B. What is Number B?
3
A square has a side length of 0.6 decimetres. Four such squares are combined to make up one larger square. What are the perimeter and the area of the large sqaure?
P = 4.8 decimetre
A = 1.44 square decimetre
Number A is 22.8. Number A is 12 times Number B. What is the difference between the two numbers A and B?
20.9
Two road maintenance teams A and B were each building a road. Team A built 3.45 metres of road in 5 days and Team B built 5.04 metres of road in 7 days. Which team had a better work efficiency?
Team B
What is x when x + 8.25 = 11.39?
x = 3.14
Given two pure decimals, comparing their sum and their product, the result is that the sum ( ) the product.
bigger than
Calculate using a simple and convenient way: 2.22X6.66+3.33X5.55
2.22X6.66+3.33X5.55 = 2.22X3.33X2+3.33X5.55 = 4.44X3.33+3.33X5.55=3.33X(4.44+5.55) = 3.33X9.99=3.33X(10-0.01)=3.33X10-3.33X0.01=33.3-0.0333=33.2667
A piece of wire can be bent into a rectangle 1.6 metres long and 1.2 metres wide. If it is bent into a square, then what is the area of the square.
1.96 square metre
The sum of Number A and Number B is 8.36. If the decimal point of Number A is moved one place to right, it will be equal to Number B. What are Number A and Number B?
Number A is 0.76; Number B is 7.6
102 less than 3 times x is 78. Find x.
x = 60