This problem involves a two-digit subtraction and division by 2 and can be solved using a number of strategies. The greater challenge is in the extensions to the problem which require the students to think about the multiples of numbers.
Niko and Kaia buy their father a card for Fathers’ Day. The card costs $5.90. Niko puts in 40c more than Kaia. How much do they each contribute to the card?
Purchasing a gift, sharing the cost of a meal
If Niko had not put in the extra 40c, they would have only paid $5.50.
Divide by 2 to find Kaia's share: $5.50 ÷ 2 = $2.75
Niko contributes $2.75 + $0.40 = $3.15.
Printed from https://nzmaths.co.nz/resource/fathers-day-card at 4:08pm on the 20th January 2021