Measuring Weight

Joyful Mathematics 2 — Decoration for Festival. Comparing heavy and light loads for festival decorations leads to grams and kilograms.

• Heavy and light — comparing by feel and by balance.
• Units kilogram (kg) and gram (g) for Class 2.
• That 1 kg = 1000 g (know that kg is bigger).

Verbal: The lower pan on a balance holds the heavier object — say heavier or lighter before reading the scale.

Symbolic: 1 kg = 1000 g. 3 kg − 1 kg = 2 kg heavier. 2 kg = 2000 g > 500 g.

Level 1 — Balance scale

The lower pan holds the heavier object.

Level 1 — Units

Level 1 — Reading a weighing scale

Pointer at 2 on kg dial → 2 kg.

Level 2 — Compare

1 kg sugar vs 500 g flour → 1 kg is heavier.

Level 2 — India

Vegetables at mandi sold in kg; gold in grams (intro only).

A watermelon weighs 3 kg. A papaya weighs 1 kg. How much heavier is the watermelon?

Step 1 — Watermelon: 3 kg
Step 2 — Papaya: 1 kg
Step 3 — Difference: 3 − 1 = 2 kg
Answer: 2 kg heavier

• Which is heavier: 1 kg rice or 750 g dal?
• Unit for your school bag?
• 2 kg + 1 kg = ?

Stretch: Mother bought 2 kg rice and 500 g dal. Which is heavier? By how many grams is 2 kg more than 500 g?

Revision tip: At the mandi, watch the weighing scale — say the number and unit (kg or g) aloud when vegetables are weighed.

Open the Practice tab for graded questions on Measuring Weight.