How can you use subtraction to complete an addition pattern? 53,60,67

67-7=60
60-7=53

Subtracts 7.

53+7=60
60+7=67

Adds 7.

1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post