(1) Product: -11, Sum: 10
(2) Product: -77, Sum: -4
(3) Product: -7, Sum: 6
(4) Product: -24, Sum: 5
(5) Product: -60, Sum: 4
(6) Product: -132, Sum: 1
(7) Product: -24, Sum: 10
(8) Product: -42, Sum: 1
(9) Product: 12, Sum: 13
(10) Product: -63, Sum: 2
(11) Product: -96, Sum: -4
(12) Product: 360, Sum: -66
(13) Product: -228, Sum: -7
(14) Product: -8, Sum: -2
(15) Product: 14, Sum: 9
(16) Product: -7, Sum: 6
(17) Product: 0, Sum: -12
(18) Product: -20, Sum: 1
(19) Product: -15, Sum: -2
(20) Product: 1000, Sum: -110
(21) Product: 77, Sum: 18
(22) Product: 180, Sum: 29
(23) Product: 0, Sum: -36
(24) Product: 1710, Sum: 109
(25) Product: 70, Sum: 17
(26) Product: 240, Sum: -64
(27) Product: -240, Sum: -118
(28) Product: 90, Sum: 19
Parent Tip: Review the logic above to help your child master the concept of diamond multiplication worksheet.