Transcript What is a textual math problem?

What is a
textual math
problem?
Textual math
problem
In autumn 2 red and 3 yellow
leaves fell down from the tree.
How many leaves fell from the
tree?
There are 2 pears and 3 apples in the basket.
This is the CONDITION of textual math
problem.
How many fruit are there in the basket?
This is the QUESTION of Math problem.
What I know is in the
condition of the textual
math problem.
In the question is told
what I have to find.
There are 2 flowers and 3 trees
on the meadow.
How many flowers and trees are
there on the meadow?
This is the SOLUTION of
textual math problem.
ANSWER: 5 flowers and trees
YOU
KNOW!
TEXTUAL MATH PROBLEM
ANSWER
SOLUTION
QUESTION
CONDITION
1. It calls word problem, because it
is written by a text.
2. A textual math problem has a
condition and a question.
3. That I know is in the condition. What I have
to find is in the question.
4. I answer to the question of the word
problem with the solution.
5. I have to write the answer of the
math problem.
Mark with a red colour a condition and
with a green colour - a question of the
math problem.
4 birds alight on the tree, one bird – on the other tree.
How many birds alight on the two trees?
1+4 =5
Solution: ……………
Answer: 5 birds
Numerical data
in textual math
problem
In the basket there are 10 apples and 5 pears.
How many fruit are there?
Solution:
Answer:
Numerical data are in the
condition of the word
problem. They are written
by numbers.
Numerical data
help us to write the
solution.
Оh, where are they?
A squirrel collected 10 acorns and
four walnuts. How many fruit did a
squirrel collect?
10
10 and 4
Solution:
Answer:
Numerical data in a word math
problem can be written by
words and numbers.
Colour a condition of Math problem - blue, a
question – red and numerical data – yellow.
Some children planted 12 trees and eight
bushes. How many trees and bushes did
they plant?
Solution:
Answer: 20 trees and bushes
Exsellent
What do the words
„more“ and „less“ mean
in the textual math
problem?
Solution: 6 – 4 = 2 (trees > mushrooms)
(mushrooms < trees)
To understand how much one number is LESS or MORE
than other, we have to take out smaller number from the
bigger.
A child collected 12 chestnuts
and 8 walnuts. How many
the walnuts are less than the
chestnuts?
A child collected 12 chestnuts
and 8 walnuts.
How many the chestnuts
are more than the walnuts?
Word problems have the same
conditions
yes
no
Word problems have different
questions
yes
no
The solutions are different
yes
no
Mimi ate four cherries.
Her brother ate 2
cherries less than Mimi.
How many cherries did
Mimi`s brother eat?
Mimi ate four cherries.
Her brother ate 2 cherries
more. How many cherries
did he eat?
Word problems have one and same questions
and different conditions
yes
no
Word problems have different questions
yes
no
Word problems have different solutions
yes
no
„MORE “
ADDITION
„LESS“
SUBTRACT
Ana collected cones. She find 9
cones of spruce tree, and 2 more
cones of pine. How many pine
cones did Ana collect?
9 + 2 = 11
I know what is
the solution! I
am a winner!
9-2=7
Word problems
on the picture
13
16
14
5 birds alighted on the
tree, and 3 - on the land
under the tree. How many
are the birds in all?
5+3=8
There were 8 birds on the
tree. Five stayed on the
tree. How many came
down on the land?
8–5=3
There were 8 birds on the
tree, three - came down
under the tree. How many
birds stayed on the tree?
8-3=5
Bravo! You know how to solve
Math word problems for the
gifts of the nature!
A Presentation – lesson
Is developed by ideas for math word
problems , connected to the title of
the project „More trees? Yes,
please!“ of Math book for FIRST
GRADE. Authors: Yuliana Garcheva,
Angelina Manova, Reni Rangelova,
Rumiana Petrova.
The lesson is realized with students
from 1st grade, SOU „Ivan Vazov“,
Pleven, Bulgaria, who are taken a part
in mathematical competitions and who
have won awards and prizes.