Chains - addition and subtraction up to 100


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

22  +3 -2  +8 -1  +4 -6  +9 -4  +2 -7
26  +4 -1  +8 -1  +4 -4  +9 -6  +2 -4
23  +1 -7  +8 -8  +6 -5  +8 -9  +5 -3
35  +7 -5  +8 -9  +5 -1  +9 -4  +1 -8

40  +8 -6  +8 -3  +4 -5  +2 -9  +6 -7
25  +4 -8  +8 -6  +1 -1  +7 -3 8 -1
39  +9 -5  +8 -7  +8 -1  +5 -6  +6 -4

21  +6 -3  +8 -4  +9 -9  +4 -8  +2 -3