Question

lesson 1

part i. name the place that the underlined digit occupies in each number.

1. **\underline{6},270
2. **12,\underline{8}76
3. \underline{3}98,734

part ii. identify the value of the underlined digit in each number.

1. **5\underline{2}7,987
2. **791,237,71\underline{4}
3. \underline{4},832

part iii. write the following numbers in standard form. (ex: 40 + 7 = 47)

1. **300 + 20 + 3
2. **100,000 + 30,000 + 1,000 + 300 + 40 + 1
3. *40,000 + 8,000 + 4
4. 1,000,000 + 300,000 + 40,000 + 400 + 60 + 1

part iv. write the following numbers in word form. (ex: 47 = forty seven)

1. **2,302
2. 55,987
3. 7,421,273

Explanation:

Identify place values in Part I

We determine the place value of each underlined digit:

1. In 6,270, the underlined digit is 6. It is in the thousands place.
2. In 12,876, the underlined digit is 8. It is in the hundreds place.
3. In 398,734, the underlined digit is 3. It is in the hundred thousands place.

Determine digit values in Part II

We calculate the value of each underlined digit based on its position:

1. In 527,987, the underlined digit is 2 (ten-thousands place). Its value is \(2 \times 10,000 = 20,000\).
2. In 791,237,714, the underlined digit is 4 (ones place). Its value is \(4 \times 1 = 4\).
3. In 4,832, the underlined digit is 4 (thousands place). Its value is \(4 \times 1,000 = 4,000\).

Convert expanded form to standard form in Part III

We sum the values to write each number in standard form:

1. \(300 + 20 + 3 = 323\)
2. \(100,000 + 30,000 + 1,000 + 300 + 40 + 1 = 131,341\)
3. \(40,000 + 8,000 + 4 = 48,004\)
4. \(1,000,000 + 300,000 + 40,000 + 400 + 60 + 1 = 1,340,461\)

Convert standard form to word form in Part IV

We write each number using words:

1. 2,302 is written as "two thousand, three hundred two".
2. 55,987 is written as "fifty-five thousand, nine hundred eighty-seven".
3. 7,421,273 is written as "seven million, four hundred twenty-one thousand, two hundred seventy-three".

Answer:

Question 1

thousands

Question 2

hundreds

Question 3

hundred thousands

Question 4

20,000

Question 5

4

Question 6

4,000

Question 7

323

Question 8

131,341

Question 9

48,004

Question 10

1,340,461

Question 11

two thousand, three hundred two

Question 12

fifty-five thousand, nine hundred eighty-seven

Question 13

seven million, four hundred twenty-one thousand, two hundred seventy-three