Year 2 Time: check-up and quiz

Key words. The short hand shows the hour. The long hand shows the minutes.

Method. Read the short hand for the hour. Read the long hand for the minutes.

1. Look at the short hand. It shows the hour. It has just passed this number.
   Hour: 7
2. Look at the long hand. Count the minutes in fives from 12 to the long hand.
   Long hand on 5: 5 × 5 = 25
3. Write the time. Write the hour, a colon, then the minutes with two digits.
   7:25

Check. The long hand is on 5, which is 25 minutes past the hour. ✓

Watch out. Write the minutes with two digits, like 2:05. Do not write 2:5.

Key words. To means the minutes come before the next hour. A quarter to is 15 minutes to the hour.

Method. Look at the long hand. Then count the minutes to the next hour.

1. Look at the long hand. It is past the number 9, so it is more than 30 minutes past the hour.
   Long hand on 9: 9 × 5 = 45 minutes past
2. Count the minutes to the next hour. Take the minutes past away from 60. The next hour is 7.
   60 − 45 = 15 minutes to 7
3. Write the time. Say the minutes to 7, or write the hour and the minutes.
   quarter to 7

Check. 45 minutes past 6 and 15 minutes to 7 make one hour. ✓

Watch out. Do not say 6 when the time is to the next hour. Say the next hour.

Key words. To means the minutes come before the next hour. A quarter to is 15 minutes to the hour.

Method. Look at the long hand. Then count the minutes to the next hour.

1. Look at the long hand. It is past the number 8, so it is more than 30 minutes past the hour.
   Long hand on 8: 8 × 5 = 40 minutes past
2. Count the minutes to the next hour. Take the minutes past away from 60. The next hour is 11.
   60 − 40 = 20 minutes to 11
3. Write the time. Say the minutes to 11, or write the hour and the minutes.
   twenty to 11

Check. 40 minutes past 10 and 20 minutes to 11 make one hour. ✓

Watch out. Do not say 10 when the time is to the next hour. Say the next hour.

Method. Use the fact that 1 hour has 60 minutes. Multiply for more hours.

1. Remember the fact. There are 60 minutes in 1 hour.
   1 hour = 60 minutes
2. Multiply by 3. 3 hours is 3 lots of 60 minutes.
   3 × 60 = 180
3. Write the answer.
   180

Check. Share the answer back: 180 ÷ 60 = 3 hours. ✓

Watch out. An hour is 60 minutes, not 100 minutes.

Method. Count the jumps from 12 to the number. Each jump is 5 minutes.

1. Count the jumps. Each jump goes from one number to the next.
   4 jumps from 12 to 4
2. Each jump is 5 minutes. Multiply the jumps by 5.
   4 × 5 = 20
3. Write the answer.
   20

Check. Count on from 12 in fives: 5, 10, ... up to 20. ✓

Watch out. Count in fives, not in ones, when you move round a clock.

Method. Count on from the first time to the second time. Count the minutes.

1. Start at the first time. Put your finger on the first time.
   3:10
2. Count on in fives to the second time. From 10 minutes to 40 minutes past 3.
   40 − 10 = 30
3. Write the answer.
   30

Check. Count back: 30 minutes on from 3:10 reaches 3:40. ✓

Watch out. Count on to the next hour first. Then count on the minutes.

Method. Read every clock. Find the one that shows 2:15.

1. Read clock A. The short hand is the hour. The long hand is the minutes.
   2:15
2. Read clock B. The short hand is the hour. The long hand is the minutes.
   2:50
3. Read clock C. The short hand is the hour. The long hand is the minutes.
   3:15
4. Find the time we want. Only one clock shows 2:15.
   2:15 is clock A
5. Write the letter.
   A

Check. The other clocks show different times. ✓

Watch out. Check both hands. The long hand on the right number is not enough on its own.

Method. Read each time. Then put them in order, earliest first.

1. Read each clock. Write each time with numbers.
   6:20, 6:45, 6:05
2. Put them in order. The earliest time has the smallest hour. If the hours match, the smaller minutes come first.
   6:05, 6:20, 6:45
3. Write the answer.
   6:05, 6:20, 6:45

Check. There are 3 times in the picture and 3 times in the answer. ✓

Watch out. Look at the hour first. 9:45 is earlier than 10:05.

Method. Work out the time, then decide if the claim is right.

1. Work it out. Use the clock or the numbers.
   The long hand is on 2, so it is 10 minutes past the hour. The time is 8:10.
2. Compare with what is said. Lin says the clock shows 10 past 8.
   It matches
3. Decide. The long hand on 2 is 10 minutes past 8, so Lin is right.
   Yes

Check. Check it again: The long hand is on 2, so it is 10 minutes past the hour. The time is 8:10.. ✓

Watch out. Check the hour and the minutes, not just one of them.

Method. Start at the start time. Add the length of the event.

1. Start at the start time. Put your finger on the start time.
   4:45
2. Add 15 minutes. Count the hours first. Then count the minutes.
   4:45 + 15 minutes = 5:00
3. Write the end time. Write the hour, a colon, then the minutes.
   5:00

Check. Count back 15 minutes from 5:00 to get 4:45. ✓

Watch out. When the minutes pass 60, the hour changes. Do not write 4:60.

Key words. The short hand shows the hour. The long hand shows the minutes.

Method. Read the short hand for the hour. Read the long hand for the minutes.

1. Look at the short hand. It shows the hour. It has just passed this number.
   Hour: 6
2. Look at the long hand. Count the minutes in fives from 12 to the long hand.
   Long hand on 1: 1 × 5 = 5
3. Write the time. Write the hour, a colon, then the minutes with two digits.
   6:05

Check. The long hand is on 1, which is 5 minutes past the hour. ✓

Watch out. Write the minutes with two digits, like 2:05. Do not write 2:5.

Key words. The short hand shows the hour. The long hand shows the minutes.

Method. Read the short hand for the hour. Read the long hand for the minutes.

1. Look at the short hand. It shows the hour. It has just passed this number.
   Hour: 2
2. Look at the long hand. Count the minutes in fives from 12 to the long hand.
   Long hand on 6: 6 × 5 = 30
3. Write the time. Say the hour first, then the minutes.
   half past 2

Check. The long hand is on 6, which is 30 minutes past the hour. ✓

Watch out. Write the minutes with two digits, like 2:05. Do not write 2:5.

Key words. To means the minutes come before the next hour. A quarter to is 15 minutes to the hour.

Method. Look at the long hand. Then count the minutes to the next hour.

1. Look at the long hand. It is past the number 7, so it is more than 30 minutes past the hour.
   Long hand on 7: 7 × 5 = 35 minutes past
2. Count the minutes to the next hour. Take the minutes past away from 60. The next hour is 9.
   60 − 35 = 25 minutes to 9
3. Write the time. Say the minutes to 9, or write the hour and the minutes.
   twenty-five to 9

Check. 35 minutes past 8 and 25 minutes to 9 make one hour. ✓

Watch out. Do not say 8 when the time is to the next hour. Say the next hour.

Method. A day has 24 hours. Multiply by the number of days.

1. Remember the fact. There are 24 hours in 1 day.
   1 day = 24 hours
2. Multiply by 2. 2 days is 2 lots of 24 hours.
   2 × 24 = 48
3. Write the answer.
   48

Check. Share the answer back: 48 ÷ 24 = 2 days. ✓

Watch out. Multiply the hours in one day by the number of days.

Method. Work out how many fives are in the minutes. The long hand points to that number.

1. Look at the minutes. The time is 45 minutes past the hour.
   45 minutes
2. Count in fives. Each number on the clock is 5 minutes.
   45 ÷ 5 = 9
3. Find the number. The long hand points to that number.
   Long hand on 9
4. Write the answer.
   9

Check. Count round in fives to 9: 9 × 5 = 45 minutes. ✓

Watch out. The long hand points to the minutes. Count in fives round the clock.

Method. Compare the hours first. If the hours match, compare the minutes.

1. Read both times. Write each time with numbers.
   4:15 and 4:05
2. Compare the hours. The earlier hour comes first.
   4 and 4
3. Compare the minutes if needed. If the hours are the same, the smaller minutes come first.
   15 and 5 minutes
4. Write the later time.
   4:15

Check. The other time is earlier, so 4:15 is right. ✓

Watch out. Look at the hour first. Then look at the minutes.

Method. Count on from the first time to the second time. Count the minutes.

1. Start at the first time. Put your finger on the first time.
   1:50
2. Count on to 2. Count the minutes to the next hour first.
   60 − 50 = 10
3. Count on to 2:20. Then add the minutes past 2.
   10 + 20 = 30
4. Write the answer.
   30

Check. Count back: 30 minutes on from 1:50 reaches 2:20. ✓

Watch out. Count on to the next hour first. Then count on the minutes.

Method. Start at the start time. Add the length of the event.

1. Start at the start time. Put your finger on the start time.
   3:30
2. Add 1 hour. Count the hours first. Then count the minutes.
   3:30 + 1 hour = 4:30
3. Write the end time. Write the hour, a colon, then the minutes.
   4:30

Check. Count back 1 hour from 4:30 to get 3:30. ✓

Watch out. When the minutes pass 60, the hour changes. Do not write 4:60.

Method. Work out the time, then decide if the claim is right.

1. Work it out. Use the clock or the numbers.
   25 past 6 means the long hand is on 5, so the time is 6:25.
2. Compare with what is said. Tom says 25 past 6 is 6:25.
   It matches
3. Decide. 25 past 6 is 6:25, so Tom is right.
   Yes

Check. Check it again: 25 past 6 means the long hand is on 5, so the time is 6:25.. ✓

Watch out. Check the hour and the minutes, not just one of them.

Method. Work out the time, then decide if the claim is right.

1. Work it out. Use the clock or the numbers.
   The short hand is between 8 and 9 and the long hand is on 6, so the time is 8:30.
2. Compare with what is said. Sam says it is 9 o’clock.
   It does not match
3. Decide. The clock shows half past 8, not 9 o’clock, so Sam is not right.
   No

Check. Check it again: The short hand is between 8 and 9 and the long hand is on 6, so the time is 8:30.. ✓

Watch out. Check the hour and the minutes, not just one of them.