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# Column addition 4: Lesson 1: whales

## Spot the Mistake!

Someone has made a mistake in their column addition. Can you explain the mistake to your talk partner?

Did you know?

Many whales travel huge distances between their breeding and feeding grounds. None travel further than the grey whale. These baleen whales make round journeys of between 10,000 and 12,000 kilometres. In general, whales migrate toward the colder poles in the summer and towards the more tropical waters of the equator in the winter.

## Use PAWS, counters and column addition to solve the following word problem.

In 2020, having travelled a distance of 2,235 kilometres from their feeding ground in the Arctic Circle, a pod of grey whales narrowly avoided being hit by a ship. Fortunately, they were able to carry on with their journey, a distance of 3,364 kilometres, to their breeding ground close to the equator.

How far did the pod of grey whales travel from their feeding ground in the Arctic circle to their breeding ground at the equator?