Grade 1 · Unit 1: Number and place value

Reading and writing numbers

Numbers can be written in digits and in words.

House numbers, bus numbers and prices all use numerals.

Numbers all around

We see numbers on houses, buses, clocks and price tags. A number written with digits is a numeral. We can also write it as a number word.

Digits and words

27 is written twenty-seven. The tens word comes first: twenty, thirty, forty… Then the ones word: one, two, three…

The hundred square

A hundred square shows the numbers from 1 to 100. Each row has ten numbers. Going down a column, the numbers grow by ten.

Look down the column under 7: 7, 17, 27, 37 … The ones digit stays 7 and the tens digit goes up by one each time.

Numbers in Bangla

In Bangladesh we also write numbers with Bangla digits. 27 is ২৭ in Bangla. It still means 2 tens and 7 ones. Different digits, same number!

What I learnt