Chapter 2 Fractions and Decimals Exercise 2.6
Chapter 2 Fractions and Decimals Exercise 2.6 Question 1. Find: (i) 0.2 × 6 (ii) 8 × 4.6 (iii) 2.71 × 5 (iv) 20.1 × 4 (v) 0.05 × 7 (vi) 211.02 × 4 (vii) 2 × 0.86 Solution: (i) 0.2 × 6 ∵ 2 × 6 = 12 and we have 1 digit right […]
Chapter 2 Fractions and Decimals Exercise 2.5
Chapter 2 Fractions and Decimals Exercise 2.5 Question 1. Which is greater? (i) 0.5 or 0.05 (ii) 0.7 or 0.5 (iii) 7 or 0.7 (iv) 1.37 or 1.49 (v) 2.03 or 2.30 (vi) 0.8 or 0.88 Solution: (i) 0.5 or 0.05 Comparing the tenths place, we get 5 > 0 ∴ 0.5 > 0.05 (ii) […]
Chapter 2 Fractions and Decimals Exercise 2.4
Chapter 2 Fractions and Decimals Exercise 2.4 Question 1. Find: Solution: Question 2. Find the reciprocal of each of the following fractions. Classify the reciprocals as proper fractions, improper fractions and whole numbers. Question 3. Find: Solution: Question 4. Find: Solution:
Chapter 2 Fractions and Decimals Exercise 2.3
Chapter 2 Fractions and Decimals Exercise 2.3 Question 1. Find: Solution: Question 2. Multiply and reduce to lowest form (if possible): Solution: Question 3. Multiply the following fractions: Solution: Question 4. Which is greater: Solution: Question 5. Saili plants 4 saplings, in a row, in her garden. The distance between two adjacent saplings is m. Find […]
Chapter 2 Fractions and Decimals Exercise 2.2
Chapter 2 Fractions and Decimals Exercise 2.2 Question 1. Which of the drawings (a) to (d) show. Solution: Question 2. Some pictures (a) to (c) are given below. Tell which of them show: Solution: Question 3. Multiply and reduce to lowest form and convert into a mixed fraction: Solution: Question 4. Shade: Solution: Question 5. […]
Chapter 2 Fractions and Decimals Exercise 2.1
Chapter 2 Fractions and Decimals Exercise 2.1 Question 1. Solution: Solution: Question 2. Arrange the following in descending order: Solution: Question 3. In a “magic square” the sum of number in each row, in each column and along the diagonals is the same. Is this a magic square? Solution: Solution: Question 5. Find the perimeter […]
Chapter 1 Integers
Chapter 1 Integers Very Short Answer Type Question 1. Fill in the blanks using < or >. (a) -3 …… -4 (b) 6 ……. -20 (c) -8 …… -2 (d) 5 …… -7 Solution: (a) -3 > -4 (b) 6 > -20 (c) -8 < -2 (d) 5 > -7 Question 2. Solve the following: […]
Chapter 1 Integers Exercise 1.4
Chapter 1 Integers Exercise 1.4 Question 1. Evaluate each of the following: (a) (-30) ÷ 10 (b) 50 ÷ (-5) (c) (-36) ÷ (-9) (d) (-49) ÷ (49) (e) 13 ÷ [(-2) + 1] (f) 0 ÷ (-12) (g) (-31) ÷ [(-30) + (-1)] (h) [(-36) ÷ 12] ÷ 3 (i) [(-6) + 5] ÷ […]
Chapter 1 Integers Exercise 1.3
Chapter 1 Integers Exercise 1.3 Question 1. Find each of the following products: (a) 3 × (-1) (b) (-1) × 225 (c) (-21) × (-30) (d) (-316) × (-1) (e) (-15) × 0 × (-18) (f) (-12) × (-11) × (10) (g) 9 × (-3) × (-6) (h) (-18) × (-5) × (-4) (i) (-1) […]
Chapter 1 Integers Exercise 1.2
Chapter 1 Integers Exercise 1.2 Question 1. Write down a pair of integers whose: (a) sum is -7 (b) difference is -10 (c) sum is 0. Solution: (a) Let us take a pair of integers -3 and -4. ∴ (-3) + (-4) = -3 – 4 = -7 (b) Let us take a pair of […]