Chapter 1 – Rational Numbers
142. Shalini has to cut out circles of diameter 1 1/4 cm from an aluminium strip of dimensions 8 3/4 cm by 1 1/4 cm. How many full circles can Shalini cut? Also calculate the wastage of the aluminium strip.
09
Jul
142. Shalini has to cut out circles of diameter 1 1/4 cm from an aluminium strip of dimensions 8 3/4 cm by 1 1/4 cm. How many full circles can Shalini cut? Also calculate the wastage of the aluminium strip. 125. Find the multiplicative inverse of July 9, 2021 Category: Chapter 1 - Rational Numbers [...]
141. The diagram shows the wingspans of different species of birds. Use the diagram to answer the question given below: (a) How much longer is the wingspan of an Albatross than the wingspan of a Sea gull? (b) How much longer is the wingspan of a Golden eagle than the wingspan of a Blue jay?
09
Jul
141. The diagram shows the wingspans of different species of birds. Use the diagram to answer the question given below: (a) How much longer is the wingspan of an Albatross than the wingspan of a Sea gull? (b) How much longer is the wingspan of a Golden eagle than the wingspan of a Blue jay? [...]
140. Find the product of additive inverse and multiplicative inverse of –1/3 .
09
Jul
140. Find the product of additive inverse and multiplicative inverse of –1/3 . 140. Find the product of additive inverse and multiplicative inverse of –1/3 . July 9, 2021 Category: Chapter 1 - Rational Numbers , Maths , NCERT Class 8 ,
139. Find the sum of additive inverse and multiplicative inverse of 7.
09
Jul
139. Find the sum of additive inverse and multiplicative inverse of 7. 139. Find the sum of additive inverse and multiplicative inverse of 7. July 9, 2021 Category: Chapter 1 - Rational Numbers , Maths , NCERT Class 8 ,
138. On a winter day the temperature at a place in Himachal Pradesh was –16°C. Convert it in degree Fahrenheit (0F) by using the formula. C/5 = F – 32/9
09
Jul
138. On a winter day the temperature at a place in Himachal Pradesh was –16°C. Convert it in degree Fahrenheit (0F) by using the formula. C/5 = F – 32/9 138. On a winter day the temperature at a place in Himachal Pradesh was –16°C. Convert it in degree Fahrenheit (0F) by using the formula. [...]
137. Find (i) 0 ÷ 2/3 (ii) 1/3 x -5/7 x -21/10
09
Jul
137. Find (i) 0 ÷ 2/3 (ii) 1/3 x -5/7 x -21/10 137. Find (i) 0 ÷ 2/3 (ii) 1/3 x -5/7 x -21/10 July 9, 2021 Category: Chapter 1 - Rational Numbers , Maths , NCERT Class 8 ,
136. Write the following rational numbers in the descending order.
09
Jul
136. Write the following rational numbers in the descending order. 136. Write the following rational numbers in the descending order. July 9, 2021 Category: Chapter 1 - Rational Numbers , Maths , NCERT Class 8 ,
135. 5 1/2 metres long rope is cut into 12 equal pieces. What is the length of each piece?
09
Jul
135. 5 1/2 metres long rope is cut into 12 equal pieces. What is the length of each piece? 135. 5 1/2 metres long rope is cut into 12 equal pieces. What is the length of each piece? July 9, 2021 Category: Chapter 1 - Rational Numbers , Maths , NCERT Class 8 ,
134. From a rope 40 metres long, pieces of equal size are cut. If the length of one piece is 10/3 metre, find the number of such pieces.
09
Jul
134. From a rope 40 metres long, pieces of equal size are cut. If the length of one piece is 10/3 metre, find the number of such pieces. 134. From a rope 40 metres long find the number of such pieces. pieces of equal size are cut. If the length of one piece is 10/3 [...]
133. Find two rational numbers whose absolute value is 1/5 .
09
Jul
133. Find two rational numbers whose absolute value is 1/5 . 133. Find two rational numbers whose absolute value is 1/5 . July 9, 2021 Category: Chapter 1 - Rational Numbers , Maths , NCERT Class 8 ,