Math competition

Round off the number 0.0029999 to 3 significant figures.

• 0.003

• 0.0030

• 0.00300

• 0.003000

Tags

CCSS.5.NBT.A.4

(-2.5) - (+1.7) - (-0.8) =？

• -5

• -3.4

• -1.6

• 1.6

Tags

CCSS.7.NS.A.1D

In the figure, the 1st pattern consists of 4 dots. For any positive integer n, the (n+1)th pattern is formed by adding 2 dots to the nth pattern. Find the number of dots in the 8th pattern.

• 14

• 16

• 18

• 20

Tags

CCSS.HSF.BF.A.2

Factory P produced 1048 smartphones in 4 hours. Factory Q produced 1764 smartphones in 6 hours.

Which factory has a faster produce rate?

                                                   

• Factory P

• Factory Q

• They have the same production rate.

• It cannot be determine.

Tags

CCSS.6.RP.A.3B

Simplify the following expression.

Tags

CCSS.6.EE.A.3

Which of the following statements is/are correct?

• II only

• III only

• I and III only

• I, II amd III

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

According to the cumulative frequency polygon below, the 75th percentile of the data is

How many positive integers satisfying the following inequality?

If the weight of a bag of rice is measured as 8 kg correct to the nearest 0.5 kg, what is the lower limit of the actual weight of the bag of rice?

• 7.5

• 7.75

• 8

• 8.5

It is given that AB is a vertical line and the coordinates of A are (-3, -6). If the length of AB is 10 units, write down ALL possible y-coordinates of B.

Tags

CCSS.6.G.A.3