Page 13 - Math 4

Number System

3. (a) How many ones make 1 ten?
(b) How many tens make 1 hundred?

(c) How many hundreds are there in 1 thousand?

(d) How many thousands are there in 1 ten-thousand?
4. (a) What is the digit at ones place in 7 × 10?

(b) What is the digit at tens place in 3 × 100 + 5 × 1?
(c) What is the digit at hundreds place in 4 × 1000 + 6 × 10 + 8 ×1?
Section B
5. Let's count the number of ones, tens, hundreds, and thousands blocks.
Then, write the numerals. Rewrite them in the expanded form.

(a) (b)

(c) (d)

6. Let's write the numerals shown by the abacus. Then rewrite them in
the expanded forms.

T O H T O Th H T O T-th Th H T O
(a) (b) (c) (d)

7. Let's draw abacus to show these numerals.

(a) 45 (b) 362 (c) 2017 (d) 34258
8. Let's find the place value of each digit of the following numerals:

(a) 672 (b) 4853 (c) 51491
9. Let's write the short forms of numerals of these expanded forms:

(a) 8 × 10 + 4 × 1 (b) 7 × 100 + 2 × 10 + 5 × 1
(c) 4 × 100 + 8 × 1 (d) 2 × 1000 + 7 × 10 + 7 × 1
(e) 5 × 1000 + 3 × 100 + 4 × 10 + 6 × 1

(f) 3 × 10000 + 6 × 1000 + 1 × 100 + 8 × 10 + 7 × 1
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Approved by Curriculum Development Centre, Sanothimi, Bhaktapur vedanta Excel in Mathematics - Book 4