Today we had a maths observation, and our math problem was basically, 2.75 + 9.98 and we solved it using elgorthym well the others used very smart strategies. First Richies group presented the way he solved, which was:
2.75 -0.02 = 2.73
9.98 + 0.02 = 10km
2.73 + 10km is 12.73.
By Viliami