**Category : **1st Class

**Look at the following:**

One ten = 1 ten =

Two tens = 2 tens =

Three tens = 3 tens =

Ten tens = 10 tens =

Twelve tens = 12 tens =

**Now, it is clear that,**

One ten is one fold of

Two tens is twofold of

Three tens is three fold of

Ten tens is tenfold of

Twelve tens is twelve fold of

**Trick:**

Just put a single zero (0) in place of ten

From the above given explanation, it is clear that while counting in tens, put number left side and a single zero (0) in the right side.

(A)

(B)

Now, it is clear that counting in 10's goes as:

10, 20, 30, 40, 50, 60, 70, 80, 90, 100 ...................... so on.

**Five tens = ?**

(a) 40

(b) 50

(c) 60

(d) 80

**Answer: (b)**

**Explanation **

Option (B) is correct because it is clear from the following diagram:

Therefore, option (b) is correct and rest of the options is incorrect.

Option: (A) is incorrect as= four tens, it is clear from the following diagram:

Option: (C) is incorrect because it is equal totens or Six tens which is clear from the following diagram:

Option (D) is incorrect because it is equal to eight tens which is clear from the following diagram:

**In figure (i) there are 10 balls inside a box and in figure (ii) there are also 10 balls inside another box. What will be the answer if balls in both the boxes are counted together?**

(a) Four tens

(b) Five tens

(c) Three tens

(d) Two tens

**Answer: (d)**

**Explanation**

While counting together the total number of balls comes to 20 and 20 = 2 fold of 10 = Two tens.

**It is clear from the following diagram:**

Option (a) is incorrect as four tens = 4 fold of 10 = 40

It is clear from the following diagram:

Option (B) is incorrect as five tens = 5 fold of 10 = 50

It is clear from the following diagram:

Option (c) is incorrect as three tens = 3 fold of 10 = 30

It is clear from the following diagram:

*play_arrow*Forth Counting*play_arrow*What Comes before*play_arrow*Counting in Tens*play_arrow*What Comes After*play_arrow*Counting in Twenties*play_arrow*Numbers and Their Name*play_arrow*Back and Forth Counting

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