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E:\Working\Focus_Learning\Math_Genius_1_(05-10-2023)\Open_Files\06_Chap_6\Chap_6
\ 11-Sep-2024 Bharat Arora Proof-6 Reader’s Sign _______________________ Date __________
Learning by Doing
Objective: To reinforce the concept of expanded form in terms of ‘tens’
and ‘ones’.
Materials Required: Foam cups, sketch pens
Procedure:
Take at least 3 foam cups.
On the first cup, write 0 to 9 for ones as
shown in the illustration.
On the second cup, write 10 +, 20 +, 30 +,
…, + 90 + as shown alongside for the tens.
The teacher will call a random number from
11 to 99. Students can make any number
from 11 to 99 by turning the cups to line up
the numbers.
Brain Sizzlers
1. How many 1-digit numbers are there? ________
2. How many 2-digit numbers are there? ________
3. How many 2-digit numbers have 1 at its tens place? ________
Mental Maths
1. Put the sign (>, < or =) in the boxes.
(a) 5 tens and 2 ones 3 tens and 6 ones
(b) 83 90 + 5
(c) 0 tens and 8 ones 30 + 4
(d) 90 + 6 69
(e) 3 tens and 3 ones 0 tens and 6 ones
2. How many zeros are used to write numbers from 1 to 100?
3. How will you write 80 in the expanded form?
100 Mathematics-1
