Printable Textbook: Smart Chart - Level 2 | Mental Maths - Class 1 PDF Download

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Smart Chart
Summary
Arrange the number of beads of different colours in a chart
 Blue Red Yellow Green
Colour No of Beads
Red 6
Blue 8
Yellow 9
Green 7
Smart charts means grouping of objects and counting the objects in  
each group
Questions
1. If             represent 20 than what does  represent?
2. If   = 2 then what is the value of        
3. If a smart chart represent 36 students of class 3 as      +1. 
What does  represent?
4. If      represent 24 hours then What does  represent?
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79
ME NT AL
MA
T
HS
 
Smart Chart
Summary
Arrange the number of beads of different colours in a chart
 Blue Red Yellow Green
Colour No of Beads
Red 6
Blue 8
Yellow 9
Green 7
Smart charts means grouping of objects and counting the objects in  
each group
Questions
1. If             represent 20 than what does  represent?
2. If   = 2 then what is the value of        
3. If a smart chart represent 36 students of class 3 as      +1. 
What does  represent?
4. If      represent 24 hours then What does  represent?
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5.   represent 10 students. On Monday out of 35      students 
were present. How many students were absent on Monday?
The following table represent the different colour of dresses worn by children 
in a party
Colour No of Children
Yellow 3
Green 10
Pink 5
Blue  7
Red 5
6. How many children attend the party?
7. How many children wore either Red or Blue coloured dress?
8. Which colour was worn by maximum number of children?
9. Which colour was worn by minimum number of children?
10. If we represent 5 children by one smiley then by how many smailies   
will you represent the number of children in green dress?
 In a science activity students were asked to measure the length of a growing 
plant. The following table depicts the length of the plant on different days.
Day Length of the Plants (cm)
1 1 cm
2 2 cm
3 4 cm
4 5 cm
5 8 cm
11. What is the increase in length of the plant on fourth day from one?
12. On which day length of the plant was 5 cm?
13. What is the difference in the length of the plant on 4
th
 and 5
th
 day?
Page 3


79
ME NT AL
MA
T
HS
 
Smart Chart
Summary
Arrange the number of beads of different colours in a chart
 Blue Red Yellow Green
Colour No of Beads
Red 6
Blue 8
Yellow 9
Green 7
Smart charts means grouping of objects and counting the objects in  
each group
Questions
1. If             represent 20 than what does  represent?
2. If   = 2 then what is the value of        
3. If a smart chart represent 36 students of class 3 as      +1. 
What does  represent?
4. If      represent 24 hours then What does  represent?
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MA
T
HS
5.   represent 10 students. On Monday out of 35      students 
were present. How many students were absent on Monday?
The following table represent the different colour of dresses worn by children 
in a party
Colour No of Children
Yellow 3
Green 10
Pink 5
Blue  7
Red 5
6. How many children attend the party?
7. How many children wore either Red or Blue coloured dress?
8. Which colour was worn by maximum number of children?
9. Which colour was worn by minimum number of children?
10. If we represent 5 children by one smiley then by how many smailies   
will you represent the number of children in green dress?
 In a science activity students were asked to measure the length of a growing 
plant. The following table depicts the length of the plant on different days.
Day Length of the Plants (cm)
1 1 cm
2 2 cm
3 4 cm
4 5 cm
5 8 cm
11. What is the increase in length of the plant on fourth day from one?
12. On which day length of the plant was 5 cm?
13. What is the difference in the length of the plant on 4
th
 and 5
th
 day?
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14. Between which days there was maximum increase in the length of the 
plant?
15. On 5
th
 day, what is the length of plant?
16. Between which two days the increase in the length of the plant was only one  
centimetre?
The following table depicts the number of brother sisters of five children?
S. No. Name of Child No. of Brothers No. of Sisters
1 Rahul 2 2
2 Seema 3 1
3 Kanchan 4 2
4 Priya 3 2
5 Arti 5 3
17. How many brothers and sisters does Kanchan have in all?
18. Who among five children has maximum number of siblings?
19. Who has two brothers?
20. Who has minimum numbers of sisters?
21. How many sisters does Arti has?
22. Who has maximum number of brothers?
23. Which two children have equal numbers of siblings?
 Observe the picture given below and answer the following questions?
24. How many flowers have only three petals?
Page 4


79
ME NT AL
MA
T
HS
 
Smart Chart
Summary
Arrange the number of beads of different colours in a chart
 Blue Red Yellow Green
Colour No of Beads
Red 6
Blue 8
Yellow 9
Green 7
Smart charts means grouping of objects and counting the objects in  
each group
Questions
1. If             represent 20 than what does  represent?
2. If   = 2 then what is the value of        
3. If a smart chart represent 36 students of class 3 as      +1. 
What does  represent?
4. If      represent 24 hours then What does  represent?
80
ME NT AL
MA
T
HS
5.   represent 10 students. On Monday out of 35      students 
were present. How many students were absent on Monday?
The following table represent the different colour of dresses worn by children 
in a party
Colour No of Children
Yellow 3
Green 10
Pink 5
Blue  7
Red 5
6. How many children attend the party?
7. How many children wore either Red or Blue coloured dress?
8. Which colour was worn by maximum number of children?
9. Which colour was worn by minimum number of children?
10. If we represent 5 children by one smiley then by how many smailies   
will you represent the number of children in green dress?
 In a science activity students were asked to measure the length of a growing 
plant. The following table depicts the length of the plant on different days.
Day Length of the Plants (cm)
1 1 cm
2 2 cm
3 4 cm
4 5 cm
5 8 cm
11. What is the increase in length of the plant on fourth day from one?
12. On which day length of the plant was 5 cm?
13. What is the difference in the length of the plant on 4
th
 and 5
th
 day?
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14. Between which days there was maximum increase in the length of the 
plant?
15. On 5
th
 day, what is the length of plant?
16. Between which two days the increase in the length of the plant was only one  
centimetre?
The following table depicts the number of brother sisters of five children?
S. No. Name of Child No. of Brothers No. of Sisters
1 Rahul 2 2
2 Seema 3 1
3 Kanchan 4 2
4 Priya 3 2
5 Arti 5 3
17. How many brothers and sisters does Kanchan have in all?
18. Who among five children has maximum number of siblings?
19. Who has two brothers?
20. Who has minimum numbers of sisters?
21. How many sisters does Arti has?
22. Who has maximum number of brothers?
23. Which two children have equal numbers of siblings?
 Observe the picture given below and answer the following questions?
24. How many flowers have only three petals?
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25. How many flowers have maximum number of petals?
26. What is the difference in number between the flowers having three and 
five petals?
27. How many more flowers with three petal flowers should be drawn to 
equalize it with the number of flowers with five petals?
28. How many four petal flowers should be drawn to equalize with the number 
of flowers with five petals?
Small Cars Big Cars
5 Red 3 Blue
2 White 4 Red
29. What is the difference in numbers of big and small cars?
30. How many total red cars are there?
Answer Key
1. 5 16. 1
st
 and 2
nd
 day; 3
rd
 and 4
th
 day
2. 8 17. 6 brothers and sisters
3. 7 Children 18. Arti
4. 8 houses 19. Rahul
5. 5 Students 20. Seema
6. 30 Children 21. 3 Sisters
7. 12 (5 Red + 7 Blue) 22. Arti
8. Green dress 23. Rahul and Seema
9. Y ellow dress 24. 4 Flowers
10.     or two smiles 25. 5
11. 4 cm 26. 1
12. 4
th
 day 27. 1
13. 3 cm 28. 1
14. 4
th
 and 5
th
 day 29. 0
15. 8 cm 30. 9 red cars
Page 5


79
ME NT AL
MA
T
HS
 
Smart Chart
Summary
Arrange the number of beads of different colours in a chart
 Blue Red Yellow Green
Colour No of Beads
Red 6
Blue 8
Yellow 9
Green 7
Smart charts means grouping of objects and counting the objects in  
each group
Questions
1. If             represent 20 than what does  represent?
2. If   = 2 then what is the value of        
3. If a smart chart represent 36 students of class 3 as      +1. 
What does  represent?
4. If      represent 24 hours then What does  represent?
80
ME NT AL
MA
T
HS
5.   represent 10 students. On Monday out of 35      students 
were present. How many students were absent on Monday?
The following table represent the different colour of dresses worn by children 
in a party
Colour No of Children
Yellow 3
Green 10
Pink 5
Blue  7
Red 5
6. How many children attend the party?
7. How many children wore either Red or Blue coloured dress?
8. Which colour was worn by maximum number of children?
9. Which colour was worn by minimum number of children?
10. If we represent 5 children by one smiley then by how many smailies   
will you represent the number of children in green dress?
 In a science activity students were asked to measure the length of a growing 
plant. The following table depicts the length of the plant on different days.
Day Length of the Plants (cm)
1 1 cm
2 2 cm
3 4 cm
4 5 cm
5 8 cm
11. What is the increase in length of the plant on fourth day from one?
12. On which day length of the plant was 5 cm?
13. What is the difference in the length of the plant on 4
th
 and 5
th
 day?
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MA
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14. Between which days there was maximum increase in the length of the 
plant?
15. On 5
th
 day, what is the length of plant?
16. Between which two days the increase in the length of the plant was only one  
centimetre?
The following table depicts the number of brother sisters of five children?
S. No. Name of Child No. of Brothers No. of Sisters
1 Rahul 2 2
2 Seema 3 1
3 Kanchan 4 2
4 Priya 3 2
5 Arti 5 3
17. How many brothers and sisters does Kanchan have in all?
18. Who among five children has maximum number of siblings?
19. Who has two brothers?
20. Who has minimum numbers of sisters?
21. How many sisters does Arti has?
22. Who has maximum number of brothers?
23. Which two children have equal numbers of siblings?
 Observe the picture given below and answer the following questions?
24. How many flowers have only three petals?
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25. How many flowers have maximum number of petals?
26. What is the difference in number between the flowers having three and 
five petals?
27. How many more flowers with three petal flowers should be drawn to 
equalize it with the number of flowers with five petals?
28. How many four petal flowers should be drawn to equalize with the number 
of flowers with five petals?
Small Cars Big Cars
5 Red 3 Blue
2 White 4 Red
29. What is the difference in numbers of big and small cars?
30. How many total red cars are there?
Answer Key
1. 5 16. 1
st
 and 2
nd
 day; 3
rd
 and 4
th
 day
2. 8 17. 6 brothers and sisters
3. 7 Children 18. Arti
4. 8 houses 19. Rahul
5. 5 Students 20. Seema
6. 30 Children 21. 3 Sisters
7. 12 (5 Red + 7 Blue) 22. Arti
8. Green dress 23. Rahul and Seema
9. Y ellow dress 24. 4 Flowers
10.     or two smiles 25. 5
11. 4 cm 26. 1
12. 4
th
 day 27. 1
13. 3 cm 28. 1
14. 4
th
 and 5
th
 day 29. 0
15. 8 cm 30. 9 red cars
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ACTIVITY
The graph shows the colour preferences of students in a school.
1. Which are the two most popular colours in the school?
 ______________ and ______________ 
2. Which are the two least popular colours in the school?
 ______________  and ______________ 
3. Arrange the colours in ascending order of preference.
4. What is the difference between the number of students preferring 
blue and pink? ______________ 
5. Two colours added together make less than 1000. There are two 
such combinations. What are they?
 a. ______________ and ______________ b. ______________ and 
______________