Video Transcript
Pick the set of cards that shows 18
hearts.
Now, when we’re talking about the
number of hearts that’re drawn on each of these cards, we’re talking about the large
hearts in the middle. The A on this card stands for the
word ace. Even if you don’t know what the
word ace means, we can work it out by looking at the number of hearts in the
middle. And an ace stands for the number
one. It’s worth one. So our first set of cards have a
value of one and eight. Now, we’re looking for a set of
cards that shows 18 hearts. And we do write the number 18 by
writing a one and an eight next to each other. So does this mean we can see 18
hearts in the first set? No, if we add one and eight
together, we get a total of nine. We can see nine hearts in the first
set. This can’t be right.
Our second set of cards shows one,
then another card with one heart on it, and then a card with eight hearts on it. Does one, one, and eight make
18? Well, as we’ve already said, one
and eight go together to make nine. And if we add the other heart, we
have a total of 10 hearts altogether, not 18. Our last set of cards shows the
number 10 and eight. And we know that 10 ones plus
another eight ones gives us a total of 18 ones. This set of cards must be the one
that shows 18 hearts. We know that the first card shows
10 hearts, so let’s treat this as a group of 10 ones and start counting from
there. 11, 12, 13, 14, 15, 16, 17, 18. The set of cards that show 18
hearts is the one that contains a group of 10 hearts and then a group of eight
hearts.
