RBSE Solutions for Class 5 Maths Chapter 11 Time In Text Exercise

RBSE Solutions for Class 5 Maths Chapter 11 Time In Text Exercise is part of RBSE Solutions for Class 5 Maths. Here we have given Rajasthan Board RBSE Class 5 Maths Chapter 11 Time In Text Exercise.

Board	RBSE
Textbook	SIERT, Rajasthan
Class	Class 5
Subject	Maths
Chapter	Chapter 11
Chapter Name	Time
Exercise	In Text Exercise
Number of Questions	2
Category	RBSE Solutions

Rajasthan Board RBSE Class 5 Maths Chapter 11 Time In Text Exercise

Page No. 58
Practice work 11.1

Question 1.
(i) Convert the following hours into minutes
1. [latex]1\frac { 1 }{ 4 }[/latex] hour = …………. minutes
2. [latex]2\frac { 1 }{ 2 }[/latex] hour = …………. minutes
3. [latex]5\frac { 3 }{ 4 }[/latex] hour = …………. minutes
4. [latex]3\frac { 1 }{ 5 }[/latex] hour = …………. minutes
Solution.
(1) [latex]1\frac { 1 }{ 4 }[/latex] hour = 1 hour + [latex]\frac { 1 }{ 4 }[/latex] hour
= 1 x 60 minutes + [latex]\frac { 1 }{ 4 }[/latex] x 60 minutes
= 60 minutes + 15 minutes = 75 minutes

(2) [latex]2\frac { 1 }{ 2 }[/latex] hour = 2 hour + [latex]\frac { 1 }{ 2 }[/latex] hour
= 2 x 60 minutes + [latex]\frac { 1 }{ 2 }[/latex] x 60 minutes,
= 120 minutes + 30 minutes
= 150 minutes

(3) [latex]5\frac { 3 }{ 4 }[/latex] hour = 5 hour + [latex]\frac { 3 }{ 4 }[/latex] hour
= 5 x 60 minutes + [latex]\frac { 3 }{ 4 }[/latex] x 60 minutes
= 300 minutes + 3 x 15 minutes
= 300 minutes + 45 minutes
= 345 minutes

(4) [latex]3\frac { 1 }{ 5 }[/latex] hour = 3 hour + [latex]\frac { 1 }{ 5 }[/latex] hour
= 3 x 60 minutes + [latex]\frac { 1 }{ 5 }[/latex] x 60 minutes
= 180 minutes + 12 minutes
= 192 minutes

Page No. 59
Practice work 11.2

Question 2.
Convert the time units of following questions,
1. 20 minutes = …………. seconds
2. [latex]6\frac { 1 }{ 2 }[/latex] minutes = …………. seconds
3. [latex]15\frac { 1 }{ 4 }[/latex](RBSESolutions.com)minutes = …………. seconds
4. 4 hour = …………. seconds
5. [latex]2\frac { 3 }{ 4 }[/latex] hour . seconds
Solution.
1. 20 minutes = 20 x 60 seconds
= 1200 seconds

2. [latex]6\frac { 1 }{ 2 }[/latex] minutes = 6 minute + [latex]\frac { 1 }{ 2 }[/latex] minute
= 6 x 60 seconds + [latex]\frac { 1 }{ 2 }[/latex] x 60 seconds
= 360 seconds + 30 seconds
= 390 seconds

3. [latex]15\frac { 1 }{ 4 }[/latex] minutes = 15 minute + [latex]\frac { 1 }{ 4 }[/latex] minute
= 15 x 60 seconds + [latex]\frac { 1 }{ 4 }[/latex] x 60 seconds
= 900 seconds + 15 seconds
= 915 seconds

4. 4 hour = 4 x 60 minutes
= 240 minute = 240 x 60 seconds
= 14400 seconds

5. [latex]2\frac { 3 }{ 4 }[/latex] hour = 2 hour + [latex]\frac { 3 }{ 4 }[/latex]hour
= 2 x 60 minutes + [latex]\frac { 3 }{ 4 }[/latex] x 60 minutes
= 120 minutes + 3 x 15 minutes
= 120 minutes + 45 minutes
= 120 x 60 seconds +45 x 60 seconds
= 7200 seconds + 2700 seconds
= 9900 seconds

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