Math Riddles
Mental Math
Place Value
More Place Value
Measuring Length
100
Violet read 15 pages on Monday. She read 10 more pages on Tuesday. How many pages did she read in those two days?
Violet read 25 pages. Explain how you solved this.
100
12 + ___ = 19
12 + 7 = 19
Explain how you used mental math to solve this.
100
What is this number in standard form?
332
100
Continue the pattern:
128, 129, ____, ____, ____
128, 129, 130, 131, 132
100
What is the best tool to use to measure the length of a book?
200
Mason collected 9 stamps and 8 stickers. How many stamps and stickers did he collect?
Mason collected 17 stamps and stickers. Explain how you solved this.
200
8 + 9 + 2 = _____
8 + 9 + 2 = 19
Explain how you used mental math to solve this.
200
What is this number in standard form?
559
200
Continue this pattern:
55, 60, 65, ____, ____, ____
55, 60, 65, 70, 75, 80
200
What is the best tool to use to measure the distance around a basketball?
300
Chuck has some glue sticks. He gets another pack with 8 glue sticks. Now he has 15 glue sticks. How many glue sticks did he have to start? Be ready to explain your answer.
Chuck started with 7 glue sticks. Explain how you solved this.
300
What two number sentences have the difference of 8?
a. 9 - 1 d. 12 - 4
b. 11 - 4 e. 13 - 6
c. 15 - 6 f. 14 - 7
a. 9 - 1
d. 12 - 4
Explain how you used mental math to solve this.
300
What is 10 more than 397?
407
300
What are the missing numbers in this pattern?
____, ____, ____, 51, 52, 53
48, 49, 50, 51, 52, 53
300
Which answer choice best describes the length of a NEW pencil?
a. greater than 50 cm long
b. less than 20 cm long
c. less than 5 cm long
b. less than 20 cm long
400
Last year, Weston helped his grandfather on the farm for 12 hours in April, 12 hours in May, 13 hours in June, and 10 hours in July. How many hours did he help his grandfather last year?
Weston helped his grandfather for 47 hours last summer. Explain how you solved this.
400
What is 10 more than 397?
407
400
What is this number in standard form?
400 + 8
408
400
Which number sentence is NOT correct?
a. 328>382
b. 483<489
c. 501<510
a. 328>382
400
Which answer choice best describes the length of a school bus?
a. 3 ft.
b. 35 ft.
c. 300 ft.
b. 35 ft.
500
Ayden collected 129 nickels in April and 207 nickels in May. How many more nickels did Ayden collect in May than in April?
Ayden collected 78 more nickels in May than he did in April. Explain how you solved this.
500
20 - 7 = ____
20 - 7 = 13
Explain how you used mental math to solve this.
500
What is this number in standard form?
124
500
What is the correct word form for 519?
a. five nineteen
b. five hundred ninety-one
c. five hundred nineteen
c. five hundred nineteen
500
How much longer is the bottom line than the top line?
The bottom line is 2 inches longer than the top line. Explain how you solved this.