Page 135 - NUMINO Challenge_A2

Answer Box A Box B
Key

4

Number of lollipops 25 15 The number of lollipops in
at the start Box B is doubled.

Number of lollipops 10 30 The number of lollipops in
in Step 1 Box A is doubled.

Number of lollipops 20 20
in Step 2

Challenge Yourself

01 The bell rings for the 2nd time at 12:00:02 or 12 o'clock and 2 seconds.

Break Time

1 sec 1 sec 1 sec 1 sec 1 sec 1 sec 1 sec
1 sec 1 sec 1 sec 1 sec 1 sec 1 sec 1 sec 1 sec

Time the Bell Rings

The bell rings 11 times with intervals of 1 second in between every two rings. The break
time is 1 second and is also repeated 11 times.
Therefore, the 12th ring will sound at 12:00:22 or 12 o'clock and 22 seconds.

02 It takes 24 seconds to walk from the 1st to the 4th floor.

It takes 8 seconds to walk up one floor.
Lisa does not need to take a rest when she reaches the 8th floor.
Therefore, the time she needs to walk from the 4th to the 8th floor is
8 10 8 10 8 10 8 62 seconds.

03 Let represent the number of dolls Kate has. The number of dolls that each child has is

shown below.

Kate Jane Sarah

Yesterday 8 10

Today 585

Today, Jane has ( 8) dolls and Sarah has ( 5) dolls.
Therefore, Jane has 3 more dolls than Sarah.

30 NUMINO Challenge A2