Lesson 9 10 11 12
Authored by Gia Hứa
Mathematics
5th Grade
Used 5+ times
AI Actions
Add similar questions
Adjust reading levels
Convert to real-world scenario
Translate activity
More...
Content View
Student View
41 questions
Show all answers
1.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Find the last digit of 9 x 9 x ... x 9 x 9 (2021 numbers 9)
Tìm chữ số tận cùng của 9 x 9x ... x 9 x 9 (2021 số 9)
Answer explanation
2.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Find the last digit of 17 x 17 x ... x 17 x 17 (1234 numbers 17)
Tìm chữ số tận cùng của 7 x 7 x ... x 7 x 7 (1234 số 7)
Answer explanation
3.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Find the last digit of
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Find the unit digit of 8 x 18 x 28 x ... x 2008
Answer explanation
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Find the last digit of S = 7 × 7 ×…× 7 (2023 numbers 7).
Tìm chữ số tận cùng của S = 7 × 7 ×…× 7 (2023 số 7)
Answer explanation
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Find the unit digit of A if:
A = 4 × 4 × 4 ×…× 4 × 8 × 8 × 8 ×…× 8 (2021 numbers 4 and 2021 numbers 8).
Answer explanation
Ta có: A = 4 × 4 ×…× 4 × 8 × 8 ×…× 8 = (4 × 8) × (4 × 8) ×…× (4 × 8) = 32 × 32 ×…× 32
(có 2021 số 32).
Chữ số tận cùng của A giống với chữ số tận cùng của B, với B = 2 x 2 x ... x 2 (có 2021 số 2).
Quy luật về chữ số tận cùng: nhóm 4 chữ số (2, 4, 8, 6) lặp lại.
Ta cần tìm chữ số thứ 2021 trong dãy.
2021 : 4 = 505 (nhóm) và dư 1 (chữ số).
Do đó, chữ số thứ 2021 trong dãy là chữ số đầu tiên của nhóm thứ 506 và là 2.
Suy ra chữ số tận cùng của B là 2.
Vậy chữ số tận cùng của A là 2.
Đáp số: 2
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Find the unit digit of A given that
A = 1 × 2 × 3 ×…× 9997 × 9998 × 9999.
Answer explanation
Access all questions and much more by creating a free account
Create resources
Host any resource
Get auto-graded reports
Continue with Google
Continue with Email
Continue with Classlink
Continue with Clever
or continue with
Microsoft
%20(1).png)
Apple
Others
Already have an account?
Similar Resources on Wayground
41 questions
Primary 5 -6 Maths Quiz
Quiz
•
4th - 6th Grade
44 questions
Math 5 SOL Review
Quiz
•
5th Grade
39 questions
Tổng hợp Toán 5 Cuối HKI (39 câu)
Quiz
•
5th Grade
45 questions
Shapes
Quiz
•
3rd - 5th Grade
40 questions
SPS Yr5 Maths Practice
Quiz
•
5th Grade
39 questions
5th Grade Post Math Test
Quiz
•
5th Grade
45 questions
Fractions on a number line
Quiz
•
5th - 6th Grade
44 questions
Citipointe Yr 4, Equivalent Fractions & Mixed Numerals
Quiz
•
4th - 7th Grade
Popular Resources on Wayground
15 questions
Fractions on a Number Line
Quiz
•
3rd Grade
20 questions
Equivalent Fractions
Quiz
•
3rd Grade
25 questions
Multiplication Facts
Quiz
•
5th Grade
29 questions
Alg. 1 Section 5.1 Coordinate Plane
Quiz
•
9th Grade
22 questions
fractions
Quiz
•
3rd Grade
11 questions
FOREST Effective communication
Lesson
•
KG
20 questions
Main Idea and Details
Quiz
•
5th Grade
20 questions
Context Clues
Quiz
•
6th Grade
Discover more resources for Mathematics
25 questions
Multiplication Facts
Quiz
•
5th Grade
15 questions
Rounding Decimals
Quiz
•
5th Grade
16 questions
Volume of Rectangular Prisms and Cubes
Quiz
•
5th Grade
15 questions
Converting Mixed Numbers and Improper Fractions
Quiz
•
4th - 5th Grade
16 questions
Coordinate Plane First Quadrant
Quiz
•
5th Grade
30 questions
Multiplication Facts 1-12
Quiz
•
2nd - 5th Grade
12 questions
Classifying Quadrilaterals
Quiz
•
5th Grade
15 questions
Volume of Triangular and Rectangular Prisms
Quiz
•
5th - 7th Grade