Written Instructions:
For each Multiple Choice Question (MCQ), four options are given. One of them is the correct answer. Make your choice (1,2,3 or 4). Write your answers in the brackets provided..
For each Short Answer Question(SAQ) and Long Answer Question(LAQ), write your answers in the blanks provided.
Leave your answers in the simplest form or correct to two decimal places.
| 1) Amutha pasted a rectangular picture on a cardboard measuring 79 cm by 61 cm. cm2 Answer:_______________ |
| 2) Thamarai pasted a rectangular picture on a cardboard measuring 76 cm by 50 cm. cm2 Answer:_______________ |
| 3) Swathi pasted a rectangular picture on a cardboard measuring 40 cm by 54 cm. cm2 Answer:_______________ |
| 4) Tamilselvi pasted a rectangular picture on a cardboard measuring 60 cm by 34 cm. cm2 Answer:_______________ |
| 5) Ovini pasted a rectangular picture on a cardboard measuring 58 cm by 36 cm. cm2 Answer:_______________ |
| 6) Haritha pasted a rectangular picture on a cardboard measuring 80 cm by 77 cm. cm2 Answer:_______________ |
| 7) Pavi pasted a rectangular picture on a cardboard measuring 30 cm by 33 cm. cm2 Answer:_______________ |
| 8) Jeevini pasted a rectangular picture on a cardboard measuring 77 cm by 33 cm. cm2 Answer:_______________ |
| 9) Pavi pasted a rectangular picture on a cardboard measuring 71 cm by 79 cm. cm2 Answer:_______________ |
| 10) Chithra pasted a rectangular picture on a cardboard measuring 65 cm by 78 cm. cm2 Answer:_______________ |
| 1) Amutha pasted a rectangular picture on a cardboard measuring 79 cm by 61 cm. Answer: 1300 cm2 SOLUTION 1 : Step 1: 79 cm x 61 cm = 4819 cm2 Step 2: 79 - 5 - 5 = 69 cm Step 3: 61 - 5 - 5 = 51 cm Step 4: 69 cm x 51 cm = 3519 cm2 Step 5: 4819 cm2 - 3519 cm2 = 1300 cm2 The area of the cardboard not covered by the picture 1300 cm2. |
| 2) Thamarai pasted a rectangular picture on a cardboard measuring 76 cm by 50 cm. Answer: 488 cm2 SOLUTION 1 : Step 1: 76 cm x 50 cm = 3800 cm2 Step 2: 76 - 2 - 2 = 72 cm Step 3: 50 - 2 - 2 = 46 cm Step 4: 72 cm x 46 cm = 3312 cm2 Step 5: 3800 cm2 - 3312 cm2 = 488 cm2 The area of the cardboard not covered by the picture 488 cm2. |
| 3) Swathi pasted a rectangular picture on a cardboard measuring 40 cm by 54 cm. Answer: 688 cm2 SOLUTION 1 : Step 1: 40 cm x 54 cm = 2160 cm2 Step 2: 40 - 4 - 4 = 32 cm Step 3: 54 - 4 - 4 = 46 cm Step 4: 32 cm x 46 cm = 1472 cm2 Step 5: 2160 cm2 - 1472 cm2 = 688 cm2 The area of the cardboard not covered by the picture 688 cm2. |
| 4) Tamilselvi pasted a rectangular picture on a cardboard measuring 60 cm by 34 cm. Answer: 360 cm2 SOLUTION 1 : Step 1: 60 cm x 34 cm = 2040 cm2 Step 2: 60 - 2 - 2 = 56 cm Step 3: 34 - 2 - 2 = 30 cm Step 4: 56 cm x 30 cm = 1680 cm2 Step 5: 2040 cm2 - 1680 cm2 = 360 cm2 The area of the cardboard not covered by the picture 360 cm2. |
| 5) Ovini pasted a rectangular picture on a cardboard measuring 58 cm by 36 cm. Answer: 688 cm2 SOLUTION 1 : Step 1: 58 cm x 36 cm = 2088 cm2 Step 2: 58 - 4 - 4 = 50 cm Step 3: 36 - 4 - 4 = 28 cm Step 4: 50 cm x 28 cm = 1400 cm2 Step 5: 2088 cm2 - 1400 cm2 = 688 cm2 The area of the cardboard not covered by the picture 688 cm2. |
| 6) Haritha pasted a rectangular picture on a cardboard measuring 80 cm by 77 cm. Answer: 612 cm2 SOLUTION 1 : Step 1: 80 cm x 77 cm = 6160 cm2 Step 2: 80 - 2 - 2 = 76 cm Step 3: 77 - 2 - 2 = 73 cm Step 4: 76 cm x 73 cm = 5548 cm2 Step 5: 6160 cm2 - 5548 cm2 = 612 cm2 The area of the cardboard not covered by the picture 612 cm2. |
| 7) Pavi pasted a rectangular picture on a cardboard measuring 30 cm by 33 cm. Answer: 342 cm2 SOLUTION 1 : Step 1: 30 cm x 33 cm = 990 cm2 Step 2: 30 - 3 - 3 = 24 cm Step 3: 33 - 3 - 3 = 27 cm Step 4: 24 cm x 27 cm = 648 cm2 Step 5: 990 cm2 - 648 cm2 = 342 cm2 The area of the cardboard not covered by the picture 342 cm2. |
| 8) Jeevini pasted a rectangular picture on a cardboard measuring 77 cm by 33 cm. Answer: 816 cm2 SOLUTION 1 : Step 1: 77 cm x 33 cm = 2541 cm2 Step 2: 77 - 4 - 4 = 69 cm Step 3: 33 - 4 - 4 = 25 cm Step 4: 69 cm x 25 cm = 1725 cm2 Step 5: 2541 cm2 - 1725 cm2 = 816 cm2 The area of the cardboard not covered by the picture 816 cm2. |
| 9) Pavi pasted a rectangular picture on a cardboard measuring 71 cm by 79 cm. Answer: 864 cm2 SOLUTION 1 : Step 1: 71 cm x 79 cm = 5609 cm2 Step 2: 71 - 3 - 3 = 65 cm Step 3: 79 - 3 - 3 = 73 cm Step 4: 65 cm x 73 cm = 4745 cm2 Step 5: 5609 cm2 - 4745 cm2 = 864 cm2 The area of the cardboard not covered by the picture 864 cm2. |
| 10) Chithra pasted a rectangular picture on a cardboard measuring 65 cm by 78 cm. Answer: 1330 cm2 SOLUTION 1 : Step 1: 65 cm x 78 cm = 5070 cm2 Step 2: 65 - 5 - 5 = 55 cm Step 3: 78 - 5 - 5 = 68 cm Step 4: 55 cm x 68 cm = 3740 cm2 Step 5: 5070 cm2 - 3740 cm2 = 1330 cm2 The area of the cardboard not covered by the picture 1330 cm2. |