Operations of Whole Numbers | Whole Numbers | Assessment | English | Grade 6

What is true about a number line?

• The distance between 1 and any number can be called the unit distance.

• The distance between first point and last point on the number line can be called the unit distance.

• The distance between 0 and any number can be called the unit distance.

• The distance between any two consecutive whole numbers can be called unit distance.

Answer explanation

The distance between any two consecutive whole numbers can be called a unit distance. e.g. The distance between 0 and 1 is the unit distance similarly, the distance between any two consecutive numbers such as 1 and 2, 2 and 3, or 3 and 4 is called the unit distance.

Tags

CCSS.2.MD.B.6

Which operation is represented on the number line?

• 4+3

• 44289

• 4 ÷ 3

• 4 x 3

Answer explanation

Arrowhead represents three jumps to the right from 4 hence the operation is 4+3

Tags

CCSS.2.NBT.B.5

Which operation is shown on the number line?

• 8 + 6 = 14

• 8 + 2 = 10

• 8 - 6 = 2

• 8 - 2 = 6

Answer explanation

Arrowhead points towards the left of 8. This suggests that some number is to be subtracted from 8. Arrows move two steps towards left from 8, therefore 2 should be subtracted from 8. We get, 8 - 2 = 6

Tags

CCSS.1.NBT.C.4

CCSS.2.MD.B.6

Choose correct representation for 2 x 3 = 6

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Answer explanation

To show 2 x 3 on number line we have to start from 0 and take 3 jumps of 2 steps each towards the right side on the number line.

Tags

CCSS.3.OA.C.7

Rohan has 6 chocolates and Rhea has 4 chocolates. They gave all their chocolates to their young sister Ruhi. How many chocolates Ruhi has?

• 24

• 2

• 10

• 1

Answer explanation

To find the total chocolates Ruhi has we will add the number of chocolates Rohan and Rhea has. Let's solve this using number line Rohan has 6 chocolates, so he will give his four chocolates to Ruhi. So we start from 6 on the number line. Since the numbers are to be added we will move from 6 to the right. Rhea has 4 chocolates so she will give 4 chocolates to Ruhi, therefore, we will jump four steps to the right. The arrow head points to the number 10. Therefore, Ruhi will have a total 10 chocolates.

Tags

CCSS.2.OA.A.1

A basket contains some flowers, out of which 9 flowers were used for decoration. If 6 flowers were left in the basket, how many flowers were there in the basket?

• 3

• 15

• 54

• 10

Answer explanation

After removing 9 flowers there were 6 flowers left in the basket so total number of flowers can be obtained by adding 9 flowers to 6 flowers. Hence the missing number of flowers must be 15.

Tags

CCSS.2.OA.A.1

Length of the plant was 4 cm on Monday. Each week the plant grows 1 cm. The length of the plant after five weeks can be represented on the number line as

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• 
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Answer explanation

Since the height of the tree was 4 cm we have to start from 4. It increases by 1 cm each week so to find the height of the tree in five weeks we have to take 5 jumps from 4 towards right on the number line. Thus we reach at 9. So, the height of the tree after five weeks will be 9 cm.

Tags

CCSS.1.OA.A.1