Master Model Sums

Here we will cover all the various types of Models Sums you can expect to see in your PSLE paper.

Type 1A

Mark paid $361.40 for a watch and a shirt.
The watch cost $67.80 more than the shirt.
How much did the watch cost?

Type 1B

The total weight of Andy, Bob and Charlie is 152kg.
Andy is 25kg lighter than Charlie and
Bob is 12kg lighter than Charlie.
What is Andy's weight?

Type 2A

Jane has twice as many sweets as Alice.
Kate has thrice as many sweets as Jane.
If they have 63 sweets altogether, how many sweets does Jane have?

Type 2B

Tim has 1/5 as many marbles as Jack.
Glen has 2/3 as many marbles as Tim.
If Jack has 65 more marbles than Glen, how
many marbles do the 3 boys have altogether?

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