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BIGGER NUMBERS oN ABAcUS A spike cannot have
more than 9 beads.
We know that two spiked abacus is used to

represent a 2-digit number.
Let us show the number 59 on the abacus. t O

It has 5 tens and 9 ones. 5 9
So, we put 9 beads in ones spike and 5 beads in tens spike as shown alongside.

WhAT coMES AfTER, BEfoRE oR BETWEEN

Look at the table below.

Before Between After
The number that The number in The number that

comes just before is between is one less comes just after is
always 1 less than the than the next number always 1 more than the
given number. and one more than the given number.

previous number.

65 –1 66 +1 67

Look at the number line.

Before After

64 65 66 67 68 69 70
Between

65 comes just before 66 (65 is 1 less than 66).

67 comes just after 66 (67 is 1 more than 66).
So, 66 lies between 65 and 67.

Think and Answer

What number between 60 to 69 has the digit in the ones place 1 more than the digit in
the tens place?

tens Ones

Also, write the numbers between which the above number lies.

Teacher’s Using a tailor/number tape, explain the children what comes just before, just after a number or what comes
Tip between two numbers.

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