Array away!
Use the array on the board to find 1/5 of 15.
3
1/4 of a number is 10. What is the number?
The number is 40
2/7 of 21 =
6
1/3 of the desks in the room are standing desks. If there are 18 desks in the room, how many are standing desks?
6 are standing desks.
1/2 + 5/8 =
9/8 or 1 and 1/8
Use the array on the board to find 2/5 of 15. Then use it to find 3/5 of 15.
6. And then 9.
1/3 of a number is 6. What is the number?
5/9 of 45 =
25
What if 1/3 of the desks in the room were standing deks, but there were 48 desks in the room? How many would be standing desks then?
16 would be standing desks.
What is 1/10 of the value of the 6 in 26.125 ?
0.6
It's 12.
2/5 of a number is 8. What is the original number?
The original number is 40.
5/8 of 48 =
30
Paulina had 32 baseball cards, and 3/4 of them were Red Sox players. How many of Paula's cards were Red Sox?
24 cards were Red Sox. Mostly Chris Sale, but that's the way it goes.
5.55 + 3 =
8.55
Use the array on the board to find 1/4 of 20, then 3/4 of 20.
5. And then 15.
3/8 of the snacks in the kids' lockers are crunchy. If there are 9 crunchy snacks, how many snacks are in the kids' lockers in all?
Got to be 72 snacks.
7/11 of 55 =
35
Matt scored 30 points in the basketball final, and 2/3 of them were from free throws. How many points did Matt get from free throws?
20 points. He must have gotten fouled a lot.
3.2 x 4 =
12.8
Use the array on the board to find 5/5 of 20.
All 20 of course.
3/10 of the slides on the playground are made of metal. If there are 50 slides on the playground, how many are metallic?
15
3/2 of 12 =
18
3/5 of the dogs in Millbury have a home. If there are 30 dogs in Millbury, how many have a home? How many do NOT have a home?
18 with a home, so 12 without one.
1 - ( 2/5 + 1/5)
2/5