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Question 2:Fill in the blank with the suitable sign (>, <, =)Question 2.1:Compare: 5/123 ............1/41Fill in the blank with the suitable number.Question 2.2:Divide Write your answer in the simplest form.Question 2.3:3km2 = .......... m2.Question 2.4:...../4 m = 175cm.The missing number is .............Question 2.5:The cost of eight spoons is 4 dollars. How much do 6 spoons cost?Answer:6 spoons cost ..............dollars.Question 2.6:The sum of two consecutive odd numbers is 2016. The...
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Question 2:

Fill in the blank with the suitable sign (>, <, =)
Question 2.1:
Compare: 5/123 ............1/41

Fill in the blank with the suitable number.

Question 2.2:
Divide 

Write your answer in the simplest form.

Question 2.3:

3km= .......... m2.

Question 2.4:

...../4 m = 175cm.
The missing number is .............

Question 2.5:

The cost of eight spoons is 4 dollars. How much do 6 spoons cost?
Answer:
6 spoons cost ..............dollars.

Question 2.6:

The sum of two consecutive odd numbers is 2016. The greater number is ...............

Question 2.7:

The sum of denominator and numerator of a fraction is 91 and the fraction is equal to 6/7. The denominator of the fraction is ...............

Question 2.8:

1/2 + 1/4 + 1/n = 11/12
The value of n is ...........

Question 2.9:

Bella has 30 candies. Alice has 5 candies fewer than Bella. Sara has 5 candies more than Bella. How many candies do they have altogether?
Answer:
They have .......... candies altogether.

Question 2.10:

The sum of the page number of the last 3 pages of a book is 369. What is the last page number?
Answer:
The last page number is .............

Question 3:

Question 3.1:
25mm= .............

  • a. 1/40m2
  • b. 1/400m2
  • c. 1/4000cm2
  • d. 1/40000m2

Question 3.2:

3/100 m= ...........

  • a. 3dm2
  • b. 30cm2
  • c. 3mm2
  • d. 3cm2

Question 3.3:

2kg = ..........

  • a. 20g
  • b. 200g
  • c. 2000g
  • d. 20000g

Question 3.4:

Write >, <, = 
3cm200mm............. 3200mm2

Question 3.5:

3/10 kg = .............g.

 

1
4 tháng 3 2017

Question 2.1 : 5/123 < 1/41

Question 2.3 : 3km2 = 3000000m2

Question 2.4 : 7/4m = 175cm

Question 2.5 : 6 spoons cost 3 dollars

13 tháng 7 2019

a) \(2^x=16\)

\(\Rightarrow2^x=2^4\)

\(\Rightarrow x=4\)

b) \(9^{x-1}=9\)

\(\Rightarrow9^{x-1}=9^1\)

\(\Rightarrow x-1=1\)

\(\Rightarrow x=1+1\)

\(\Rightarrow x=2\)

c) \(x^4=16\)

\(\Rightarrow x^4=2^4\)

\(\Rightarrow x=2\)

d)\(2^x:2^5=1\)

\(\Rightarrow2^{x-5}=2^0\)

\(\Rightarrow x-5=0\)

\(\Rightarrow x=5\)

13 tháng 7 2019

a) 2x = 16

<=> 2x = 24

<=> x = 4

=> x = 4

b) 9x - 1 = 9

<=> 9x - 1 = 91

<=> x - 1 = 1

<=> x = 2

=> x = 2

c) x4 = 16

<=> x4 = 24

<=> x = -2; 2

=> x = -2; 2

4 tháng 11 2017

a, 0,5 tấn

b, 0,2 dm2

c, 30,7 dm

d, 500,02 dm2

k mk nnha

5 tháng 6 2018

a) \(\frac{1}{2}\) tấn = \(0,5\) tấn

b) \(\frac{1}{5}\) dm2 = \(0,2\).dm2

c) 3m 7cm = \(30,7\)dm

d) 5m2cm2 = \(500,02\)dm2

~ Hok Tốt~

7 tháng 9 2017

đáp án a 

7 tháng 9 2017

Câu A đó nhe bạn

12 tháng 8 2018

5^6+5^7+5^8

=5^6.(1+5+5^2)

=5^6.31 chia hết cho 31

7^6+7^5-7^4

=7^4.(7^2+7-1)

=7^4.55 chia hết cho 11

12 tháng 8 2018

BÀI 2:

a)  \(5^6+5^7+5^8=5^6\left(1+5+5^2\right)=5^6.31\)      \(⋮\)\(31\)

b)  \(7^6+7^5-7^4=7^4.\left(7^2+7-1\right)=7^4.55\)\(⋮\)\(11\)

c)  \(2^3+2^4+2^5=2^3.\left(1+2+2^2\right)=2^3.7\)\(⋮\)\(7\)

d) mk chỉnh đề

 \(1+2+2^2+2^3+...+2^{59}\)

\(=\left(1+2\right)+\left(2^2+2^3\right)+...+\left(2^{58}+2^{59}\right)\)

\(=\left(1+2\right)+2^2\left(1+2\right)+...+2^{58}\left(1+2\right)\)

\(=\left(1+2\right)\left(1+2^2+...+2^{58}\right)\)

\(=3\left(1+2^2+...+2^{58}\right)\)\(⋮\)\(3\)

16 tháng 6 2018

Có 2A = 1+1/2+1/2^2+...+1/2^49

2A-A =A= (1+1/2+1/2^2+...+1/2^49) - (1/2+1/2^2+1/2^3+...+1/2^50) = 1-1/2^50 < 1

=> A<1

5 tháng 4 2019

1             0,05m3=50dm3

2             ko hiểu đề

3             570365cm3

4              2380dm3

5              2giờ 24 phút

5 tháng 4 2019

1.0,05m3=50dm3

2.A .Sai B. sai C. đúng D. sai

3. 57m2 365cm2= 570365cm2

4. 23,8 m3 =23800 dm3

5. 2,4 giờ =2 giờ 24 phút

27 tháng 6 2019

a, 4hm9m2 =400,09 dam2

b,47hm2 8dm=470000,08 m2

c,35km2807dm2=350000008,07 m2

d,2km2165m2= 20001,65 dam2

27 tháng 6 2019

Bạn ơi câu a là đổi ra dam2 vs dm2 lun