Order of operations
Answers are for parents and teachers.
1
A garden has 3 beds with 12 flowers each. 8 flowers die. How many flowers are left? Write one expression.
3 × 12 − 8 = 36 − 8 = 28 flowers.
2
Find 48 ÷ 6 + 4 × 3.
48 ÷ 6 = 8 and 4 × 3 = 12. 8 + 12 = 20.
3
Find 6 × (5 + 4) and 6 × 5 + 4. Why are the answers different?
6 × 9 = 54 and 30 + 4 = 34. In the first, 5 + 4 is added first because of the parentheses.
4
Aya buys 2 books at 25 LE each and gets a discount of 10 LE. Write an expression and find how much she pays.
2 × 25 − 10 = 50 − 10 = 40 LE.
5
A sweet shop packs 4 boxes of 12 sweets and 3 boxes of 8 sweets. How many sweets is that? Solve with one expression and check with a table.
4 × 12 + 3 × 8 = 48 + 24 = 72 sweets. Table: 48 and 24 give 72.