Before we learn to read and write numbers, we need to understand place value — what each digit means depending on its position.

Example: In the number 4,582:

• 2 is in the ones place (2 ones)
• 8 is in the tens place (8 tens)
• 5 is in the hundreds place (5 hundreds)
• 4 is in the thousands place (4 thousands)

To read a whole number correctly:

1. Identify the place value of each digit from left to right.
2. Read the number from the digit with the highest place value.
3. Use the words "and" only when there are tens and ones remaining.

Reading Numbers up to 9999

Examples:

Reading Numbers Above 10,000

Examples:

Tip: When a number has zeros in the middle, we skip saying them. For example, 5080 is read as "five thousand and eighty" (not "five thousand zero hundred and eighty").

Writing Numbers in Numerals

To write a number in numerals (using digits), place each digit in its correct position based on place value.

Example: Write "four thousand two hundred and sixteen" in numerals.

Answer: 4,216

Writing Numbers in Words

To write a number in words, write each part from left to right using the correct place value names.

Examples:

Problem 1

Read the number 7,304 and write it in words.

Answer: Seven thousand three hundred and four

Problem 2

Write "six thousand four hundred and twenty-one" in numerals.

Answer: 6,421

Problem 3

Read and write: 612,785

• Place values: 5 ones, 8 tens, 7 hundreds, 2 thousands, 1 ten thousands, 6 hundred thousands
• Reading: Six hundred twelve thousand seven hundred and eighty-five

When writing numbers in words, remember:

• Use "thousand" after the thousands digit
• Use "hundred" after the hundreds digit
• Use "and" before the tens and ones (if both are present)
• Example: 3,456 = Three thousand four hundred and fifty-six

In Tanzania, you use reading and writing of multi-digit numbers every day. For example, when checking your mobile money balance or the price of goods at the market, you need to read numbers correctly. If a bag of maize at the market costs TSH 15,500 (fifteen thousand five hundred shillings), you can read this number and understand the price, then write it down if needed for budgeting or selling your crops.