Year 1: Half full and quarter full

Key words. Half full means the water is halfway up.

Method. Look for the container that is half full.

1. Look at each container. Check how high the water reaches.
   A: quarter full; B: full; C: half full; D: empty
2. Find the one that is half full. Only one container matches.
   C: half full
3. Write the answer.
   C

Check. The other containers are not half full. ✓

Watch out. Look at the water, not at the shape of the container.

Key words. Quarter full means the water is a quarter of the way up.

Method. Look for the container that is quarter full.

1. Look at each container. Check how high the water reaches.
   A: half full; B: quarter full; C: empty
2. Find the one that is quarter full. Only one container matches.
   B: quarter full
3. Write the answer.
   B

Check. The other containers are not quarter full. ✓

Watch out. Look at the water, not at the shape of the container.

Key words. Full means the water reaches the top.

Method. Look for the container that is full.

1. Look at each container. Check how high the water reaches.
   A: half full; B: full; C: quarter full
2. Find the one that is full. Only one container matches.
   B: full
3. Write the answer.
   B

Check. The other containers are not full. ✓

Watch out. Look at the water, not at the shape of the container.

Key words. Empty means there is nothing in it.

Method. Look for the container that is empty.

1. Look at each container. Check how high the water reaches.
   A: quarter full; B: empty
2. Find the one that is empty. Only one container matches.
   B: empty
3. Write the answer.
   B

Check. The other containers are not empty. ✓

Watch out. Look at the water, not at the shape of the container.

Method. Look at the water. The one with more water is higher up.

1. Look at each container. Check how high the water reaches.
   A: half full; B: full
2. Find the one with more water. The higher the water, the more it holds.
   B has more water
3. Write the answer.
   B

Check. The water in B is higher than in the others. ✓

Watch out. Compare the same kind of container. Look at how high the water reaches.

Method. Look at the water. The one with less water is lower down.

1. Look at each container. Check how high the water reaches.
   A: full; B: quarter full
2. Find the one with less water. The higher the water, the more it holds.
   B has less water
3. Write the answer.
   B

Check. The water in B is lower than in the others. ✓

Watch out. Compare the same kind of container. Look at how high the water reaches.

Method. Look at how full each one is. Start with the emptiest.

1. Look at each container. Check how high the water reaches.
   A: half full; B: empty; C: quarter full; D: full
2. Put them in order. Start with the one that has the least water.
   B, C, A, D
3. Write the answer.
   B, C, A, D

Check. There are 4 containers in the question and 4 in the answer. ✓

Watch out. Empty comes first, then quarter full, then half full, then full.

Method. Look at how much is empty before the water is added.

1. Look at the jug. The top half is empty at the start.
   Half of the jug is empty
2. Fill the empty half. Filling to the top fills the empty half.
   The jug is filled with one more half
3. Write the answer.
   Half the jug

Check. Half and half make a whole, so the jug is now full. ✓

Watch out. Half full plus half more makes full.

Method. Look at the water. The one with more water is higher up.

1. Look at each container. Check how high the water reaches.
   A: quarter full; B: half full
2. Find the one with more water. The higher the water, the more it holds.
   B has more water
3. Write the answer.
   B

Check. The water in B is higher than in the others. ✓

Watch out. Compare the same kind of container. Look at how high the water reaches.

Method. Think about what one whole jug looks like when it is shared into equal parts.

1. Share a whole jug into equal parts. Each part is one quarter.
   1 quarter + 1 quarter + 1 quarter + 1 quarter
2. Count the quarters. Four quarters make one whole.
   4 quarters = 1 whole
3. Write the answer.
   4 quarters

Check. A quarter is one of four equal parts. ✓

Watch out. A quarter is one of four equal parts, not one of two.

Method. Compare the two jugs. Look at how high the water reaches.

1. Compare the two fractions. Half is bigger than a quarter.
   1/2 is bigger than 1/4
2. Look at the water levels. The half full jug has water higher up.
   Half full is higher than quarter full
3. Write the answer.
   No. Half full has more water than quarter full.

Check. Half of a jug is more than a quarter of it. ✓

Watch out. Two fractions can look alike, but the bigger one has more water.