Understand the rule first
Translate the story into one calculation at a time. Estimate first, keep units beside the numbers, then check whether the final answer fits the question.
Choose the correct operations and keep a multi-step calculation organised.
Translate the story into one calculation at a time. Estimate first, keep units beside the numbers, then check whether the final answer fits the question.
Doing every operation in the order the numbers appear, instead of following the meaning of the problem.
Reusable method: Underline the quantities and write one operation per line.Find the total in four boxes before subtracting the used pencils.
Answer A: 87
4 × 24 = 96, then 96 − 9 = 87.
Quick method: Underline the quantities and write one operation per line.
Work out all available seats, then remove the empty ones.
Answer A: 139
3 × 52 = 156 seats. 156 − 17 = 139 people.
Quick method: Underline the quantities and write one operation per line.
Multiply to find everything saved before considering the spending.
Answer A: £37
7 × £8 = £56. £56 − £19 = £37.
Quick method: Underline the quantities and write one operation per line.
Find oranges per crate, then multiply by the number sold.
Answer D: 90
144 ÷ 8 = 18 oranges per crate; 18 × 5 = 90.
Quick method: Underline the quantities and write one operation per line.
Calculate the number bought before subtracting.
Answer A: 147
9 × 35 = 315; 315 − 168 = 147.
Quick method: Underline the quantities and write one operation per line.
Complete the division before adding 37.
Answer A: 145
864 ÷ 8 = 108, then 108 + 37 = 145.
Quick method: Underline the quantities and write one operation per line.
Find the total number bought, then subtract those used.
Answer B: 274
15 × 24 = 360 pencils; 360 − 86 = 274.
Quick method: Underline the quantities and write one operation per line.
Calculate all the seats before removing the empty ones.
Answer C: 183
4 × 53 = 212 seats; 212 − 29 = 183 passengers.
Quick method: Underline the quantities and write one operation per line.
Add both days, then subtract the refunds.
Answer D: 466
325 + 187 = 512; 512 − 46 = 466 tickets.
Quick method: Underline the quantities and write one operation per line.
Undo the subtraction before undoing the multiplication.
Answer A: 63
Add 45: 333 + 45 = 378. Then 378 ÷ 6 = 63.
Quick method: Underline the quantities and write one operation per line.