tally marks
یک روش سریع قرار دادن اعداد در گروه های پنج تایی
Tally marks are a quick way of keeping track of numbers in groups of five. One vertical line is made for each of the first four numbers; the fifth number is represented by a diagonal line across the previous four

ten
ده
People have ten fingers and ten toes

tetrahedron
چهار وجهی
A tetrahedron is a pyramid formed by four triangles

third
سومین
The third person or item comes after the first and second

13
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thirteen
سیزده
Thirteen is the number after twelve (12) and before fourteen (14)

30
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thirty
سی
Thiry is the number after twenty nine (29) and before thirty one (31)

1,000

thousand
هزار
One thousand is a whole number that is equal to 100 times 10

three
سه
Three is the number between 2 and 4. A tricycle has three wheels. A triangle has three sides. A Triceratops has three horns. Tri means three

torus
شکلی شبیه دونات
A torus is a doughnut-shaped object

trapezoid
ذوذنقه
A trapezoid is a four-sided figure with exactly two parallel sides

triangle
مثلث
A triangle is a geometric figure that has three sides

12
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twelve
دوازده
Twelve (12) is the number between eleven (11) and thirteen (13). Dozen is another word for twelve

twenty
بیست
There are twenty (20) apples above

two
دو
We have two eyes, two ears, two arms, and two legs

3≠ 1 + 1

unequal
Two things are unequal if they are not the same

Venn diagram
A Venn diagram is a diagram that uses overlapping circles to show relationships among sets of things

0

zero
صفر
Zero is a number that stands for the absence of size or quantity