Samacheer Kalvi Class 4 Maths Solutions Term 2 Chapter 4 Measurements InText Questions

Activity (Text Book Page No. 25)

Question 1. Look at the pictures below and decide if they are usually measured in grams or kilograms.
Answer:

🎯 Exam Tip: Remember that 1 kilogram is equal to 1000 grams. This helps in understanding which unit is appropriate for different items.

Activity (Text Book Page No. 26)

Question 2. Observe each picture and choose the correct unit of weight (gram or kilogram) for it.
Answer:
(i) A cat is usually measured in kilograms. So, 5 kg is the correct weight.
(ii) A refrigerator is a heavy item, so it's measured in kilograms. 160 kg is the correct weight.
(iii) A van is very heavy, so it's measured in kilograms. 2000 kg is the correct weight.
(iv) A single leaf is very light, so it's measured in grams. 1 g is the correct weight.
(v) A bird is light, so it's measured in grams. 50 g is the correct weight.
In simple words: We pick 'gram' for light items and 'kilogram' for heavier items. For example, a leaf is light (grams), but a car is heavy (kilograms). This way, we use the best unit for each thing.

🎯 Exam Tip: Always think about the size and density of the object. Small, light objects typically use grams, while larger, heavier objects use kilograms.

Question 3. Complete the following conversions between grams and kilograms.
(a) 1 kg = ______ g
(b) 2 kg = ______ g
(c) ______ kg = 3000 g
(d) 15 kg = ______ g
(e) 23 kg = ______ g
Answer:
(a) 1 kg = 1000 g
(b) 2 kg = 2000 g
(c) 3 kg = 3000 g
(d) 15 kg = 15000 g
(e) 23 kg = 23000 g. Knowing that 1 kg equals 1000g helps make these conversions easy.
In simple words: To change kilograms to grams, you multiply the number of kilograms by 1000. To change grams to kilograms, you divide the number of grams by 1000.

🎯 Exam Tip: Remember the core conversion: 1 kilogram = 1000 grams. This fundamental relationship is key to solving all such conversion problems.