Q1.
Choose your favourite number and write as many expressions as you can having that value.
Answer
Let us choose 24. Using two numbers and any one of +, –, × and ÷ we can write many expressions whose value is 24.
20 + 4 = 24
30 – 6 = 24
4 × 6 = 24
48 ÷ 2 = 24
12 + 12 = 24
34 – 10 = 24
3 × 8 = 24
96 ÷ 4 = 24
30 – 6 = 24
4 × 6 = 24
48 ÷ 2 = 24
12 + 12 = 24
34 – 10 = 24
3 × 8 = 24
96 ÷ 4 = 24
We can also use more than two numbers:
10 + 10 + 4 = 24
5 × 4 + 4 = 24
2 × (10 + 2) = 24
5 × 4 + 4 = 24
2 × (10 + 2) = 24
Why it happens: A number does not have one “correct” expression. Every pair of numbers that adds, subtracts, multiplies or divides to 24 gives another expression with the same value. That is why different-looking expressions can be joined by an ‘=’ sign.
Try This: Pick your own favourite number — your house number or your jersey number — and write ten expressions for it. Try to use each of +, –, × and ÷ at least twice.