Numbers displayed on the Spike Abacus will help students understand the number and its place. Spike Abacus is very helpful in understanding the concept of the size and name of a number. We know that the spike abacus represents the number of multi-digit digits, with the digits represented by the tips of the abacus.

The peaks from right to left represent the places of the local values ​​of the digits in ascending order, ie 1, 10, 100, ………. etc.

These places are marked with Ö ((Unit or those), T. ((Tens), H. ((Hundreds), Th ((Thousands), T th ((ten thousand), H th ((Hundreds of thousands) and so on ………. From the abacus above, we can count the pearls from right to left and then write the exact number, i.e. 51643.

Ö(Unit or ones) —– In ones or units we see 3 pearls.

T.(Tens) —– In the tens place we see 4 pearls.

H. (Hundreds) —– We see 6 pearls on hundreds.

Th (Thousands) —– In thousands we see 1 pearl.

T th (Tens of thousands) —– In tens of thousands of places we see 5 pearls.

Under this topic we mainly learn how to show the 1 Digit number on the spike abacus, 2-digit number on the spike abacus, 3-digit number on the spike abacus, 4-digit number on the spike abacus, 5-digit number on the spike abacus and so on … .

Representation of the numbers on the abacus:

We can show 1000 on an abacus with four vertical bars. The sticks represent a place value of thousands, hundreds, tens, and ones. We add pearls on the bars to show different numbers. Each rod can hold up to 9 pearls.  This shows 9 tens and 9 ones. The number is 99. If we add 1 to 99, it is 10 tens. Re-group 10 tens as 1 hundred.  This shows 9 hundreds, 9 tens, and 9 ones. The number is 999. If we add 1 more to 999, it’s 10 hundreds. Group 10 hundreds into 1 thousand. 1 pearl in the thousand digit equals 1 thousand.

1 pearl in the thousand digit equals 1 thousand.

Related concept

Number formation.

Find out numbers

Names of numbers.

Numbers displayed on Spike Abacus.

1-digit number on Spike Abacus.

2-digit number on Spike Abacus.

3-digit number on Spike Abacus.

4-digit number on Spike Abacus.

5-digit number on Spike Abacus.

Large number.

Place value table.

Status.

Problems related to the status.

Extended form of a number.

Standard shape.

Comparison of numbers.

Example for comparing numbers.

Successor and predecessor of an integer.

Arrange numbers.

Number formation with the specified digits.

Formation of the largest and smallest numbers.

Examples of the formation of the largest and the smallest number.

Round down numbers.

4th grade math activities

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