Multiplication Problems Printable 5th Grade - Free Printable

Let's solve each of these multiplication problems step by step and identify the "trick" problem that is *not* a multiplication problem.

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1) The cruising speed of a jumbo jet is about 900 km per hour. How far could it travel in 4 hours?

This is a distance = speed × time problem.

$$
900 \text{ km/h} \times 4 \text{ h} = 3600 \text{ km}
$$

✔ Multiplication problem.

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2) There are 0.7 mg of iron in an artichoke. How many grams of iron in 6 artichokes?

First, convert milligrams to grams:
$ 0.7 \text{ mg} = 0.0007 \text{ g} $

Now multiply:

$$
0.0007 \text{ g/artichoke} \times 6 = 0.0042 \text{ g}
$$

Alternatively, you can do:
- $ 0.7 \text{ mg} \times 6 = 4.2 \text{ mg} $
- Then convert: $ 4.2 \text{ mg} = 0.0042 \text{ g} $

✔ Multiplication problem.

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3) A bottle holds 0.8 pints of liquid. How much would 5 bottles hold?

$$
0.8 \text{ pints} \times 5 = 4 \text{ pints}
$$

✔ Multiplication problem.

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4) How many seconds in an hour?

This is a conversion problem.

We know:
- 1 minute = 60 seconds
- 1 hour = 60 minutes

So:
$$
60 \text{ min/hour} \times 60 \text{ sec/min} = 3600 \text{ seconds}
$$

But here’s the key: This is not asking for a multiplication involving variables or repeated groups — it's asking for a known conversion fact.

However, the operation used is multiplication, so technically it is a multiplication problem.

But let's keep this in mind as a possible "trick" — because it's not based on scaling quantities like the others; it's a unit conversion.

Still, it involves multiplication.

Wait — maybe we should look deeper.

Let’s check all of them again.

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5) An athletics track is 400m long. If I ran 9 times round the track, how far would that be?

$$
400 \text{ m/lap} \times 9 \text{ laps} = 3600 \text{ m}
$$

✔ Multiplication problem.

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6) A football weighs 0.9 lb. How much would 6 footballs weigh?

$$
0.9 \text{ lb} \times 6 = 5.4 \text{ lb}
$$

✔ Multiplication problem.

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7) 100 sheets of paper are about 5mm thick. How thick is one sheet of paper?

This is asking for division!

We have:
$$
\frac{5 \text{ mm}}{100 \text{ sheets}} = 0.05 \text{ mm per sheet}
$$

This is not a multiplication problem — it's a division problem.

🔍 This is the trick problem!

It’s asking for the thickness of one sheet, so we divide total thickness by number of sheets.

✔ So this is not a multiplication problem.

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8) A pack of pens contains 8 pens. A box contains 20 packets. How many pens in 5 boxes?

Step-by-step:

- Pens per packet: 8
- Packets per box: 20 → $ 8 \times 20 = 160 $ pens per box
- 5 boxes: $ 160 \times 5 = 800 $ pens

Or: $ 8 \times 20 \times 5 = 800 $

✔ Multiplication problem.

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✔ Final Answer:

The trick problem that is not a multiplication problem is:

> Problem 7) 100 sheets of paper are about 5mm thick. How thick is one sheet of paper?

Because this requires division, not multiplication.

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✔ Solutions Summary:

1) $ 900 \times 4 = 3600 $ km
2) $ 0.7 \times 6 = 4.2 $ mg → $ 0.0042 $ g
3) $ 0.8 \times 5 = 4 $ pints
4) $ 60 \times 60 = 3600 $ seconds
5) $ 400 \times 9 = 3600 $ m
6) $ 0.9 \times 6 = 5.4 $ lb
7) $ 5 \div 100 = 0.05 $ mm (← Not multiplication)
8) $ 8 \times 20 \times 5 = 800 $ pens

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🟩 Final Answer:

👉 Problem 7 is the 'trick' problem — it is not a multiplication problem.