Mixed formula + (2)

Mixed formula + (2)
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  • Math

  • Maths

  • Age 6-12

  • level: 1-6

  • English

Author's Instructions

+6 = +1 -5 +10
+7 = +2 -5 +10
+8 = +3 -5 +10
+9 = +4 -5 +10