A little balance goes a long way.
Scales, weights, and missing amounts.
Ten questions, with the answers explained. Try them in your head, then open each answer when you're ready.
Play this quiz →QUESTION 1 / 10
Two identical blocks balance a 10 kg weight. What does one block weigh?
- 20 kg
- 5 kg
- 2 kg
- 10 kg
Show answer & explanation+
5 kg
The two blocks share ten kilograms equally, so each weighs five.
QUESTION 2 / 10
One box plus a 2 kg weight balances 9 kg. What does the box weigh?
- 11 kg
- 6 kg
- 9 kg
- 7 kg
Show answer & explanation+
7 kg
Subtract the extra two kilograms from nine.
QUESTION 3 / 10
Three identical cans weigh 12 kg together. What do five such cans weigh?
- 24 kg
- 20 kg
- 18 kg
- 15 kg
Show answer & explanation+
20 kg
Each can weighs four kilograms. Five cans weigh twenty.
QUESTION 4 / 10
An apple weighs 150 g and a pear weighs 200 g. What do two apples and one pear weigh?
- 350 g
- 550 g
- 500 g
- 450 g
Show answer & explanation+
500 g
Two apples weigh 300 grams, and the pear adds 200.
QUESTION 5 / 10
A bag weighs 3 kg empty and 11 kg full. How much do its contents weigh?
- 14 kg
- 8 kg
- 11 kg
- 7 kg
Show answer & explanation+
8 kg
Subtract the empty bag's three kilograms from the full eleven.
QUESTION 6 / 10
Four equal parcels weigh 6 kg in total. What is one parcel's mass?
- 2 kg
- 1.5 kg
- 1 kg
- 2.5 kg
Show answer & explanation+
1.5 kg
Six divided by four is one and a half kilograms.
QUESTION 7 / 10
A red block balances two blue blocks. A blue block weighs 3 kg. What does the red one weigh?
- 5 kg
- 9 kg
- 6 kg
- 3 kg
Show answer & explanation+
6 kg
Two blue blocks together weigh six kilograms.
QUESTION 8 / 10
One block and 4 kg balance two identical blocks. What does one block weigh?
- 8 kg
- 4 kg
- 6 kg
- 2 kg
Show answer & explanation+
4 kg
Remove one block from both sides. One block then balances four kilograms.
QUESTION 9 / 10
Five identical coins balance one 25 g weight. What does one coin weigh?
- 4 g
- 5 g
- 6 g
- 10 g
Show answer & explanation+
5 g
Twenty-five grams shared equally among five coins is five grams each.
QUESTION 10 / 10
A crate contains 8 kg of fruit. You remove 3 kg and add 2 kg. How much fruit is inside now?
- 6 kg
- 5 kg
- 9 kg
- 7 kg
Show answer & explanation+
7 kg
Eight minus three plus two equals seven kilograms.