Column subtraction 4: Lesson 3: walruses
The Maths Bit!
In this exciting lesson, you will need to solve a range of subtraction word problems that feature walruses. 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: Subtract a 3-digit number from a 4-digit number with one or more exchanges, including an exchange across more than one place value.
Use PAWS, counters and column subtraction to solve the following word problem.
In a single week, a large male Pacific walrus managed to remove the flesh from 6,457 clam shells. This particular walrus had a weight of 1,453 kilograms. His mating partner was 729 kilograms lighter.
What was the weight of the male walrus’ mating partner?
Did you know?
A walrus is a heavy creature because it has lots of blubber beneath its skin. This blubber (fat) keeps it warm and provides it with energy. However, a male walrus is much heavier than a female walrus.