All the cards are different. There is a number from 1 to 8 on each card. Our student has chosen four cards that add up to 20.
What are they?
There are seven different possibilities, try to find them all.
What if our student has three cards that add up to 16?
5+5+5+5= 20
ReplyDeleteRead the question carefully Nathaniel, all the cards show different numbers.
DeleteSeven ways to make 20. seven ways to make 16
ReplyDelete10+10=20. 8+8=16
19+1=20. 15+1=16
17+3=20. 16-0=16
13+7=20. 9+8-1=16
20-0=20. 17-1=16
15+5=20. 14+2=16
9+1+7+3=20. 1+9+6=16
Again read the question carefully Sahayla. Each card has number 1, 2, 3, 4, 5, 6, 7 or 8 printed on it. So which four of these numbers add up to 20?
Delete10+10=20
ReplyDelete19+1=20
9+9+2=20
5 X 4=20
You can only use numbers 1, 2, 3, 4, 5, 6, 7 or 8 and only once. Four of these numbers can add up to make 20, which ones?
Delete5+5=10
ReplyDelete10tims10=100
12times12=144
5+5+5+5+5=20
ReplyDelete6+9+2+3=20
5+4+6+5=20
3+3+3+11=20
10+5+4+1=20
7+5+4+4=20
8+6+2+4=20
Our first correct answer! Oneof these are right Joel and Modelie. Can anyone tell which one and explain why?
Delete1+19=20 20+0=20 16+4=20 12+8=20
ReplyDeleteNot quite right Olumayokun. Read what I have written above.
Delete8+8+4=20
ReplyDelete6+6+8=20
7+8+5=20
8+6+6=20
5+5+8+2=20
2+6+4+8=20