Easy Arithmetic Puzzles

#396: 1 _ 8 _ 4 _ 3 = -1 easy #397: 1 _ 8 _ 4 _ 4 = 6 easy #398: 1 _ 8 _ 4 _ 4 = -2 easy #399: 1 _ 8 _ 4 _ 5 = -3 easy #412: 1 _ 8 _ 4 _ 4 = 2 easy #415: 1 _ 8 _ 5 _ 5 = 7 easy #419: 1 _ 8 _ 6 _ 3 = -3 easy #422: 1 _ 8 _ 6 _ 6 = 7 easy #425: 1 _ 8 _ 6 _ 3 = 4 easy #431: 1 _ 8 _ 8 _ 8 = 7 easy #442: 1 _ 9 _ 2 _ 3 = 6 easy #443: 1 _ 9 _ 2 _ 6 = 3 easy #449: 1 _ 9 _ 3 _ 1 = 2 easy #450: 1 _ 9 _ 3 _ 2 = 1 easy #463: 1 _ 9 _ 3 _ 6 = 2 easy #469: 1 _ 9 _ 4 _ 6 = 6 easy #479: 1 _ 9 _ 6 _ 2 = 3 easy #480: 1 _ 9 _ 6 _ 4 = 6 easy #481: 1 _ 9 _ 6 _ 3 = 2 easy #487: 1 _ 9 _ 8 _ 2 = 5 easy #493: 2 _ 1 _ 2 _ 8 = 6 easy #494: 2 _ 1 _ 2 _ 8 = -2 easy #495: 2 _ 1 _ 3 _ 9 = 5 easy #496: 2 _ 1 _ 3 _ 9 = -1 easy #497: 2 _ 2 _ 2 _ 4 = 1 easy #498: 2 _ 2 _ 2 _ 8 = 1 easy #499: 2 _ 2 _ 2 _ 3 = 7 easy #500: 2 _ 2 _ 2 _ 4 = 9 easy #504: 2 _ 2 _ 2 _ 4 = -7 easy #505: 2 _ 2 _ 2 _ 5 = -9 easy #506: 2 _ 2 _ 2 _ 6 = 3 easy #507: 2 _ 2 _ 2 _ 8 = 4 easy #510: 2 _ 2 _ 3 _ 6 = 8 easy #511: 2 _ 2 _ 3 _ 2 = 7 easy #512: 2 _ 2 _ 3 _ 4 = 13 easy #515: 2 _ 2 _ 3 _ 3 = -8 easy #516: 2 _ 2 _ 4 _ 8 = 3 easy #517: 2 _ 2 _ 4 _ 6 = 5 easy #518: 2 _ 2 _ 4 _ 8 = 6 easy #519: 2 _ 2 _ 4 _ 8 = 1 easy #520: 2 _ 2 _ 4 _ 2 = 1 easy #521: 2 _ 2 _ 4 _ 8 = -2 easy #522: 2 _ 2 _ 4 _ 1 = 2 easy #523: 2 _ 2 _ 4 _ 3 = 4 easy #524: 2 _ 2 _ 4 _ 3 = -2 easy #525: 2 _ 2 _ 4 _ 4 = -3 easy #526: 2 _ 2 _ 4 _ 5 = 6 easy #527: 2 _ 2 _ 4 _ 5 = -4 easy