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# 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!

=  Picture the problem in your mind.

=  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.