“Singapore Math Level 2A & 2B – Unit 15: Graph” focuses on introducing students to the concept of graphing. It teaches how to plot and interpret simple bar graphs and pictographs, emphasizing the importance of representing data visually. Students will learn to organize data, label axes, and understand the relationship between data points, helping them develop skills in analyzing and presenting data effectively.
Singapore Math Level 2A & 2B – Unit 15: Graph complete solution
Examples Part
The graph below shows the number of students in a class who went on different field trips throughout the year.
(a) How many students went on the zoo field trip? 4 x 10 = 40
(b) How many students went on the beach field trip? 1 x 10 = 10
(c) How many more students went on the zoo field trip than the bird park field
trip? 4 – 3 = 1
1 x 10 = 10
(d) How many fewer students went on the beach field trip than the botanical garden
field trip? 2 – 1 = 1
1 x 10 = 10
(e) How many students went on all the field trips throughout the year?
3 + 2 + 4 + 4 + 1 = 14
14 x 10 = 140
Unit 15: Graph
1. Angelo and Michael went to the zoo and saw these animals. They drew a picture graph to show the number of each animal.
(a) They saw ___ giraffes.
(b) They saw ___ monkeys.
(c) They saw ___ more giraffes than lions.
(d) They saw ___ fewer snakes than monkeys.
(e) They saw the most ___.
(f) They saw the fewest ___.
Solution:
(a) 16 [∵4 × 4 = 16]
(b) 24 [∵6 × 4 = 24]
(c) 8 [∵(4 × 4) – (2 × 4) = 16 – 8 = 8]
(d) 12 [∵(6 × 4) – (3 × 4) = 24 – 12 = 12]
(e) monkeys.
(f) lions.
2. Study the following graph carefully and fill in each blank.
Cartons of milk sold in a week
(a) The most cartons of milk were sold on ____.
(b) 50 cartons of milk were sold on Tuesday. Each carton stands for ____ carton(s) of milk.
(c) ____ cartons of milk were sold on Friday.
(d) ____ more cartons of milk were sold on Thursday than on Friday.
(e) ____ fewer cartons of milk were sold on Monday than on Friday.
(f) ____ cartons of milk were sold on Tuesday and Thursday.
Solution:
(a) Wednesday
(b) 10 [∵50 ÷ 5 = 10]
(c) 40 [∵4 × 10 = 40]
(d) 30 [∵(7 × 10) – (4 × 10) = 70 – 40 = 30]
(e) 10 [∵(4 × 10) – (3 × 10) = 40 – 30 = 10]
(f) 120 [∵(5 × 10) + (7 × 10) = 50 + 70 = 120]
3. Below is a Graphs / chart that shows the animals that Aiden’s classmates keep as pets.
Help Aiden complete the picture graph below.
Solution:
Rabbits → 6 ÷ 2 = 3✪
Turtles → 10 ÷ 2 = 5✪
Fish → 20 ÷ 2 = 10✪
Cats → 8 ÷ 2 = 4✪
Birds → 14 ÷ 2 = 7✪
4. Study the picture graph below and fill in each blank.
Number of books sold in a bookstore
(a) _____ books were the most popular.
(b) _____ books were the least popular.
(c) 4 fewer fairytale books were sold than _____ books.
(d) _____ more comic books were sold than fiction books.
(e) _____ fewer comic books were sold than coloring books.
Solution:
(a) Coloring [∵ 7 × 4 = 28]
(b) Fiction [∵ 3 × 4 = 12]
(c) Coloring [∵(7×4)-(6×4) = 28-24 = 4]
(d) 4 [∵(4×4)-(3×4) = 16-12 = 4]
(e) 12 [∵(7×4)-(4×4) = 28-16 = 12]
5. Study the picture graph below and fill in each blank.
(a) ______ people went to the movies on Wednesday.
(b) ______ more people went to the movies on Friday than on Tuesday.
(c) 2 children went to the movies on Monday. There were ______ adults at the movies on Monday.
(d) ______ people went to the movies over the weekend.
(e) 16 adults went to the movies on Thursday. There were ______ children at the movies on Thursday.
Solution:
(a) 25 [∵5 × 5 = 25]
(b) 20 [∵Friday → 7 × 5 = 35; Tuesday → 3 × 5 = 15 ; 35 – 15 = 20]
(c) 8 [∵2 × 5 = 10; 10 – 2 = 8]
(d) 95 [∵Saturday → 9 × 5 = 45; Sunday → 10 × 5 = 50; 45 + 50 = 95]
(e) 9 [∵5 × 5 = 25; 25 – 16 = 9]
