Diamonds/Rectangles

Fill in the missing numbers. (order doesn't matter)

• 1,3 
• -1, -3
• 3, 12
• -1, 12

Fill in the missing numbers. (order doesn't matter)

• 3,4
• 2,6
• 12,8
• -6,-2

Fill in the missing numbers. (order doesn't matter)

• 4,9
• -4,-9
• 3,23
• 13,13

Fill in the missing numbers. (order doesn't matter)

• 2,7
• -2,7
• -7,-2
• 2,5

Fill in the missing numbers. (order doesn't matter)

• -12,-6
• 6,12
• 8,9
• 9,54

Fill in the missing numbers. (order doesn't matter) 

• -7,-7
• -7,7
• 0,49
• 0,0

Complete the Diamond Problem

• 45 and 2

• 9 and 10

• -90 and 1

• 15 and 6

Solve the Diamond Problem

• 6 and 2

• -6 and -2

• 3 and 4

• -3 and -4

• 1 and 12

Fill in the missing numbers.

• top: 20, bottom:9
• top: 1, bottom:9
• top: -1, bottom:20
• top: 11, bottom:9

• 8 and 8

• 4 and 4

• 2 and 8

• 16 and 1