Wisdom World School Std 7 Maths Worksheet 1 (Integers) August 2024-2025 PDF

August Unit Assessment, 2024-2025 Std: VII Subject: Mathematics Worksheet No.: 1- Answer Key Date: _____________ Time: 30 mins Topic: L1 Integers Ex 1.1 to Ex 1.3 Instructions: 1. The students must solve the worksheet at...

August Unit Assessment, 2024-2025 Std: VII Subject: Mathematics Worksheet No.: 1- Answer Key Date: _____________ Time: 30 mins Topic: L1 Integers Ex 1.1 to Ex 1.3 Instructions: 1. The students must solve the worksheet at home. 2. The students must write the answers in the space provided. 3. They must bring this worksheet to school on 27th June, 2024. They must also carry a red/blue pencil for corrections. 4. Teacher will discuss the answers in the class. Q1. Multiple Choice Questions: i. Which of the following is true? а) (−11) + (−7) > (−11) − (−7) b) (−11) + (−7) < (− 11) − (−7) c) (−11) + (−7) = (−11) − (−7) d) (+11) − (−7) < (−11) − (−7) ii. Find: (−45) − _____ = 0 a) 1 b) 0 c) ― 45 d) + 45 iii. What is (− 1)99 equal to? a) 99 b) −1 c) −99 d) 1 iv. Find {(−13) + (−51)} + ________ = (−13) + {(−51) + (−73)} a) −73 b ) 73 c ) − 13 d ) −51 v. (−7) − (−5) = _________. a) +14 b) −14 c) −2 d) +2 vi. The additive inverse of −15 is ____. 1 1 a) −15 b ) + 15 c) d) −15 15 vii. Evaluate: (−15) × 0 × (−4) × 8 a) 0 b) − 480 c) 480 d) 48 Page 1 of 3 viii. What is the value of the expression: −30 + 25 − (−19) a) 4 b) − 4 c ) 14 d ) 24 Q2. Arrange the following integers in ascending order. a. 12, −11, 0, −15, 8 −15, −11, 0, 8, 12 b. 65, −100, −21, −77, 100, 7 −100, −77, −21, 7, 65, 100 Q3. Complete the following patterns: a. −23, −15, −7, 1, 9, 17 b. 8, 5, 2, −1, −4, −7 Q4. Evaluate: a. −96 − (−53) + 186 −75 b. 79 −4 − (−98) + (−10) = −96 +53 + 186 −75 = 79 −4 + 98 −10 = −96 −75 +53 + 186 = 79 + 98 −4 −10 = −171 + 239 = 177 − 14 = 68 = 163 c. (−6) × (−5) × (−4) × 5 d. (−13) × (−5) × (−10) × (−2) = 30 × (−20) = 65 × 20 = −600 = 1300 Q5. The sum of two integers is −126. If one of the integers is −73, find the other integer. The sum of two integers = −126 One of the integers = −73 The other integer =? Let the other integer be x. ∴ x + (−73) = (−126) x −73 = (−126) x = (−126) + 73 x = (−53) Ans: The other integer is (−53). Page 2 of 3 Q6. A submarine is positioned 250 m below the sea level. If it descends to 345 m, what will be its new position? Position of the submarine below the sea level = 250 m Submarine descends to = 345 m ∴ New position of the submarine below the sea level = (250 + 345) m = 595 m Ans: The new position of the submarine will be 595 m below the sea level. ************ Page 3 of 3