Perfect Squares
35 x 35=
What is 1,225
19 x 21=
What is 399
In equation below fill every blank with the SAME number
____+_____=27 - ____
What is 9
There are 3 ways to add two 1-digit numbers to get a sum of 16:
9+7, 8+8, and 7+9.
How many ways are there to add two 3-digit numbers to get a sum of 211?
There are 12 different ways to add two 3-digit numbers to get a sum of 211.
100+111, 103+108, 106+105, 109+102
101+110, 104+107, 107+104, 110+101
102+109, 105+106, 108+103, 111+100
45 x 45=
What is 2,025
24 x 26=
What is 624
In equation below fill every blank with the SAME number
30 +_____=50 -( 4+___)
What is 8
Adam adds three of the numbers below and gets a sum with ones digit 3. What is Adam's sum?
45, 56, 67,78 and 89
What is 56+78+89=223
The smallest possible sum of three ones digit in the list is 5+6+7=18, and the largest sum is 7+8+9=24. The only number from 18 to 24 with ones digit 3 is 23, so the sum of the ones digits must be 23. The only 3 ones that have a sum of 23 are 6+8+9=23
85 x 85=
What is 7,225
46 x 44=
What is 2,024
A farmer has 36 chickens and rabbits. There are 96 legs altogether. How many chickens does the farmer have? How many rabbits does the farmer have?
What is 12 rabbits and 24 chickens.
What number can you double to equal the sum of five 222's?
What is 555.
111+111+111+111+111+111+111+111+111+111= 222+222++222+ 222+222=
=555+555
95 x 95=
What is 9,025
81 x 79=
What is 6,399
(8+3) +7 +(8+3)-7=
What is 22
Mia writes a different digit in each blank below to create a sum of three 3-digit numbers. What is the smallest possible sum of the three numbers?
_ _ _+_ _ _+ _ _ _
What is 711
For example, 148+256+307
You coild have arranged the digits differently and still got the same sum. As long as you used 1,2, and 3 as the hundreds digits, and 6,7 and 8 as the ones digits, the sum always will be 711.
1,005 x 1,005=
What is 1,010,025
801 x 799=
What is 639,999
(80+110)+50-(110+80)+(110-80)=
What is 80
Alex uses the numbers 18,21,25,36,40, and 43 to make three pairs of numbers that have the same sum. What is the sum of each pair of the numbers?
___+___=___+___=___+___
What is 18+43=61
21+40=61
25+36=61