phoenix math sentences

Number sentences and story problems

LI: To write a number sentence/number story to show we understand the question

A number sentence uses numbers and symbols instead of words.  Number sentences are often used if there is problem to work out.  An example of writing a number sentence from a story problem is shown in the box below.

Example: Three friends have 59 marbles.  If Tamatea has 12 and Sarah has 28, how many does Bob have? (story problem) Write a number sentence to show how many marbles Bob has. 59 – 12 – 28 = 19    (number sentence) Five friends have 6 marbles each.  How many do they have altogether? (story problem) Write a number sentence to show how many marbles they all have.    5 × 6 = 30   (number sentence)

Sione was working out how much money he had.  He started with $482 in the bank, spent $152 on an MP3 player, $50 on DVDs, and $25 on food. Write a number sentence to show how much money Sione has left.

482 - 152 = 330

330 - 50 = 280

255 - 25 = 255

Max has been working out how many runs in total he has got for his team.  So far he has scored 18, 24, 60, 103, and 25 runs.  Write a number sentence to show how many runs he has scored so far.

60 + 24 = 84

18+ 103 = 121

84 + 121 = 205

205 + 25 = 230

Awhina had 640 marbles.  She decided to give them away to her family.  She gave 90 to her younger sister, 80 to her brother, 30 to her mother and 50 to her father. Write a number sentence to show how many marbles Awhina had left.

640 - 30 =610

610 - 90 = 520

520 -80 = 440

440 - 50 = 390

Mere went shopping for Easter eggs.  She bought 7 packets of 5 eggs. Write a number sentence to show how many Easter eggs Mere bought altogether.

2 x 5 = 10

2 x 5 = 10

3 x 15 = 15

Maraea was training for a swimming race.  For the first 3 days she swam for 2 hours a day. For the next 3 days she swam for 5 hours a day. Write a number sentence to show how many hours she swam over the 6 days.

2x 5 = 10

1 x 5 = 5

3 x 2 = 6

10 + 5 +6 = 21

Hamish gave away all his old Dragonball Z cards.  He had 28 cards and shared them equally between his 7 friends. Write a number sentence to show how many cards they get each.

7 people each get 4 out of 28

Write a story problem for the number sentence: 70 + 15 + 25 = _____

70 + 15 + 25 = 110

       

       

Write a story problem for the number sentence: 365 – 160 – 50 – 123 = ____

365 - 50  - 160 - 123 = 32

Write a story problem for the number sentence: 3 × 5 = ____

1 x 5 = 5

2 x 5 = 10

3 x 5 = 15

Write a story problem for the number sentence: 24 ÷ 4 = ___

24 - 1 = 23

23 - 2 = 21

21 - 1 = 20       

Number sentences and story problems

LI: To write a number sentence/number story to show we understand the question

A number sentence uses numbers and symbols instead of words.  Number sentences are often used if there is problem to work out.  An example of writing a number sentence from a story problem is shown in the box below.

Example: Three friends have 59 marbles.  If Tamatea has 12 and Sarah has 28, how many does Bob have? (story problem) Write a number sentence to show how many marbles Bob has. 59 – 12 – 28 = 19    (number sentence) Five friends have 6 marbles each.  How many do they have altogether? (story problem) Write a number sentence to show how many marbles they all have.    5 × 6 = 30   (number sentence)

Sione was working out how much money he had.  He started with $482 in the bank, spent $152 on an MP3 player, $50 on DVDs, and $25 on food. Write a number sentence to show how much money Sione has left.

482 - 152 = 330

330 - 50 = 280

255 - 25 = 255

Max has been working out how many runs in total he has got for his team.  So far he has scored 18, 24, 60, 103, and 25 runs.  Write a number sentence to show how many runs he has scored so far.

60 + 24 = 84

18+ 103 = 121

84 + 121 = 205

205 + 25 = 230

Awhina had 640 marbles.  She decided to give them away to her family.  She gave 90 to her younger sister, 80 to her brother, 30 to her mother and 50 to her father. Write a number sentence to show how many marbles Awhina had left.

640 - 30 =610

610 - 90 = 520

520 -80 = 440

440 - 50 = 390

Mere went shopping for Easter eggs.  She bought 7 packets of 5 eggs. Write a number sentence to show how many Easter eggs Mere bought altogether.

2 x 5 = 10

2 x 5 = 10

3 x 15 = 15

Maraea was training for a swimming race.  For the first 3 days she swam for 2 hours a day. For the next 3 days she swam for 5 hours a day. Write a number sentence to show how many hours she swam over the 6 days.

2x 5 = 10

1 x 5 = 5

3 x 2 = 6

10 + 5 +6 = 21

Hamish gave away all his old Dragonball Z cards.  He had 28 cards and shared them equally between his 7 friends. Write a number sentence to show how many cards they get each.

7 people each get 4 out of 28

Write a story problem for the number sentence: 70 + 15 + 25 = _____

70 + 15 + 25 = 110

       

       

Write a story problem for the number sentence: 365 – 160 – 50 – 123 = ____

365 - 50  - 160 - 123 = 32

Write a story problem for the number sentence: 3 × 5 = ____

1 x 5 = 5

2 x 5 = 10

3 x 5 = 15

Write a story problem for the number sentence: 24 ÷ 4 = ___

24 - 1 = 23

23 - 2 = 21

21 - 1 = 20