Chains - addition and subtraction up to 100


(1) Write the required values ​​in the circles. Pay attention to the direction of the arrows.

29  +2 -9  +8 -8  +1 -3  +3 -1  +5 -4
31  +1 -8  +8 -8  +1 -1  +3 -3  +5 -1
34  +7 -4  +8 -2  +6 -7  +4 -10  +10 -5
33  +8 -7  +8 -10  +10 -8  +3 -1  +7 -2

37  +4 -3  +8 -5  +1 -7  +5 -10  +6 -4
39  +1 -2  +8 -3  +7 -8  +8 -5 4 -8
28  +3 -7  +8 -4  +4 -8  +10 -3  +6 -1

21  +6 -5  +8 -1  +3 -10  +1 -2  +5 -5