Singapore Math Level 3A & 3B – Unit 4: Problem Solving - Adding And Subtracting - 10 Questions
Unit 4: PROBLEM SOLVING - ADDING AND SUBTRACTING
Solve the following word problems. Show your work in the space below. [We have used equivalent questions for the subject: problem solving - adding and subtracting of Singapore math level 3a. Go ahead and understand adding and subtracting by solving word problems.
1. Mia has 236 stickers. Abby has 127 fewer stickers than Mia.
(a) How many stickers does Abby have?
(b) How many stickers do they have altogether?
Solution:
(a)
236 – 127 = 109
Abby has 109 stickers.
(b)
236 + 109 = 345
They have 345 stickers altogether.
2. Roberto travels 3280 mi. on his motorcycle. Steve travels 568 mi. farther than Roberto. How far do they travel altogether?
Solution:
3280 + 568 = 3848
Steve travels 3848 m.
3848 + 3280 = 7128
They travel 7128 mi. altogether.
3. Asia has 2345 stickers in her collection. Hailey has 3542 stickers in her collection.
(a) How many more stickers does Hailey have than Asia?
(b) How many stickers do they have altogether?
Solution:
(a)
3542 – 2345 = 1197
Hailey has 1197 more stickers than Asia.
(b)
3542 + 2345 = 5887
They have 5,887 stickers altogether.
4. Sarah earns $2140 a month. Carmen earns $150 more than Sarah. Sonya earns $270 less than Carmen. How much does Sonya earn?
Solution:
$2140 + $150 = $2290
Carmen earns $2290.
$2290 – $270 = $2020
Sonya earns $2020.
5. Kimiko pays $2080 for her television set. Rebecca pays $275 less for her television set.
(a) How much does Rebecca pay for her television set?
(b) How much do both television sets cost?
Solution:
(a)
$2080 – $275 = $1805
Rebecca pays $1805 for her television set.
(b)
$2080 + $1805 = $3885
Both television sets cost $3885.
6. 3865 girls went to a carnival. 1459 more boys went to the same carnival. How many children went to the carnival altogether?
Solution:
3865 + 1459 = 5324
5324 boys went to the concert.
5324 + 3865 = 9189
9189 children went to the carnival altogether.
7. 2015 people attended a concert on Saturday. 3585 more people attended the concert on Sunday. How many people attended the concert on both days?
Solution:
2015 + 3585 = 5600
5600 people attended the concert on Sunday.
5600 + 2015 = 7615
7615 people attended the concert on both days.
8. Jason used 1075 kg of Iron Rod to build a house on Saturday. He used 360 kg less Iron Rod on Sunday. How much cement did Jason use on both days?
Solution:
1075 – 360 = 715
He used 715 kg of Iron Rod on Sunday.
1075 + 715 = 1790
He used 1790 kg of Iron Rod on both days.
9. A used car costs $5180. It costs $3960 to buy a used motorbike.
(a) How much less is the used motorbike than the used car?
(b) How much will it cost to buy the used car and the used motorbike?
Solution:
(a)
$5180 – $3960 = $1220
The used motorbike is $1220 less than the used car.
(b)
$5180 + $3960 = $9140
lt will cost $9140 to buy the used car and the used motorbike.
10. Chloé spent $2387 on books, travel and foods last year. Her grandfather asked her to spend $500 less this year.
(a) How much could Chloé spend on books, travel and foods this year?
(b) If Chloé were to spend $4000 on books, travel and foods this year, how much would she have overspent?
Solution:
(a)
$2387 – $500 = $1887
Chloé could spend $1,887 on books, travel and foods this year.
(b)
$4000 – $1887 = $2113
She would have overspent by $2113.
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