5 Multiplying Two Numbers that End in 5
6 Multiplying Whole number by Fraction in the Forma times b over c
7 Squaring a 3 Digit Number with a 0 in the Tens
8 Multiplying by 37
9 Factoring Sums of Factorials!
10 N! plus M! Divided by N!
11 ! Plus ! Equals times∙!
12 Product of 4 Consecutive Numbers
13 Sum of Squares Add to Ten Ones Digit
14 Sum of Squares Add to Ten Tens Digit
15 Multiplying Over/Under Same Square with Mixed Numbers
16 b over a times a plus 1 b over a plus 1 times a plus 2
17 Sum of Square Roots
18 b over n plus c over n
19 Fractions Between a and b with Denominator c
20 Estimating Square Roots
21 The Remainder When Dividing by 11
22 Finding the Quotient of a Number and 11
23 The Remainder of an÷n
24 Number of Terms in an Arithmetic Sequence
25 The Sum of an Arithmetic Sequence
26 The Sum of an Infinite Geometric Sequence
27 Missing Terms of Arithmetic and Geometric Sequences
28 The Sum of the First “n” Even/Odd numbers
29 Pentagonal and Hexagonal Numbers
30 The Sum of the nth Triangular Number and the nth Pentagonal Number
31 The Sum of Consecutive Pentagonal Numbers
32 The Sum of First n Cubes
33 The Quotient of the Consecutive Cubes and Consecutive Numbers
34 The Sum of the Powers of a Number
35 The Sum of the Positive Integral Divisors
Recent Comments