# Column addition 4: Lesson 1: whales

## The Maths Bit!

In this exciting lesson, you will need to solve a range of addition word problems that feature whales. Try using **PAWS** to arrive at the right answer!

**P ** = Picture the problem in your mind.

**A **= Annotate the word problem by highlighting the important information.

**W** = Write down the number sentence that needs to be solved.

**S** = Solve the number sentence using an efficient strategy.

**Prior learning:** 3 or 4-digit column addition with no exchange

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

At birth, a blue whale calf weighed 3,576 kilograms. After feeding on its mother’s milk every day for the next month, it increased its weight by 2,323 kilograms.

**How heavy was the blue whale calf by the time it had reached the age of one month?**

**Did you know?**

Blue whales are one of the fastest growing animals on the planet. During the nursing period, a calf (fed on its mother’s fat-rich milk) will grow 2.5 to 3.5 centimetres in length every day.