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Multiple-Choice Strategies

Maths · Year 3 NAPLAN
Year 3
Lesson Guide
Explanation
On this test nothing is taken away for a wrong answer. That means a blank is the only answer that is certainly worth nothing. Even a pure guess between four answers is right about one time in four. So if you cannot work a question out, still pick something — and if you run out of time, fill in every empty bubble before you stop.
Your Turn
You guess between 4 answers. About how often would you be right? Check: 1 time in 4.
Watch Out
Never leave a bubble empty, even at the very end of the test.
Explanation
Before you work anything out, look at the four answers and cross out the ones that cannot possibly be right. There are ten counters altogether, so the answer to how many are not red cannot be ten, because that would mean none are red. It certainly cannot be sixteen, because there are not that many counters. Two answers gone before any maths, and now even a guess is right half the time.
Your Turn
There are 10 counters. Can the answer to "how many are not red" be 16? Check: no — there are only 10.
Watch Out
Cross out for a reason you can say out loud, not because a number "looks wrong".
Explanation
Some questions ask you to say about how much. You do not measure — you look. The bucket holds ten litres and the water is a bit more than half way up, so the answer has to be more than five. That crosses out three and five immediately. Of the two left, seven matches the picture and nine would be nearly full. Guessing the size first turns a hard question into an easy one.
Your Turn
A 10 litre bucket is a bit over half full. Is the answer more or less than 5 litres? Check: more.
Watch Out
For an "about how much" question, do not try to be exact. The answer is one of the four choices.
Explanation
When you have an answer, look back at the picture and ask whether it could possibly be true. If the picture shows eight shells and your answer is twelve, something has gone wrong. If the question asks for part of a group, your answer must be smaller than the whole group; if it asks for everything altogether, it must be bigger than any one part. That check takes about three seconds and it catches most silly mistakes.
Your Turn
A picture shows 8 shells. Could the answer to "how many did she give away" be 12? Check: no.
Watch Out
An answer bigger than everything in the picture is nearly always wrong.
Explanation
Four steps for every question. Read it and underline the important word. Cross out the answers that cannot be right. Work it out, then check it against the picture. And if you are stuck, pick the best one left and move on — you can come back at the end if there is time. Do not spend a long time on one question, because there are lots of others waiting for you. Quiz and exercises now.
Your Turn
You are stuck on a question. What should you do? Check: cross out what you can, pick one, and move on.
Watch Out
Moving on is allowed. Sitting on one hard question costs you the easy ones further along.
📌 Key Points — this lesson in a nutshell
  • There are four answers and exactly one is right.
  • Nothing is taken off for a wrong answer, so never leave one blank. Always pick something.
  • Cross out the answers that cannot be right. Two crossed out makes a guess much better.
  • Guess the size of the answer before you work it out. It tells you when something has gone wrong.
Step 1: Introduction
Step 1 of 5
A blank scores nothing, every time what you dochance of being rightleave it blank0guess from 41 in 4cross out 1, then guess1 in 3cross out 2, then guess1 in 2 Nothing is taken away for a wrong answer. A blank is the only answer that is certainly worth nothing. Even a pure guess is right about 1 time in 4. If you run out of time, fill in every empty bubble before you stop.
"How many are NOT red?" — 10 counters, 6 red 461016 10 is all of them and 16 is more than there are. Cross both out before doing any maths.
About how much water is in the bucket? 510 the bucket holds 10 litres 3 litres5 litres7 litres9 litres The water is more than half way up, so the answer must be more than 5. That crosses out 3 and 5 straight away, and 7 is the one that matches the picture.
Does the answer make sense? work it outlook backat the picturedoes itmake sense? When you have an answer, look back at the picture and ask if it could be true. If a question shows 8 shells and your answer is 12, something has gone wrong. If a question asks for part of a group, your answer must be SMALLER than the whole group. If it asks for everything altogether, your answer must be BIGGER than any one part. This check takes about three seconds and catches most silly mistakes. It works even when you are not sure how to do the question properly.
Four steps, every question 1 · Read it, and underline the important word 2 · Cross out the answers that cannot be right 3 · Work it out, then check it against the picture 4 · Stuck? Pick the best one left and move on Do not spend a long time on one question. There are lots of others waiting. You can come back at the end if there is time. Quiz and exercises now.
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