• 两位数加法速算技巧教程
• 发布时间：2021-01-13 00:12 | 作者：admin | 来源：未知 | 浏览： 次

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• 50	+	54	=	104	——	48	+	98	=	146	——	41	+	62	=	103
  28	-	11	=	17	——	79	+	44	=	123	——	95	+	52	=	147
  20	+	19	=	39	——	33	-	24	=	9	——	80	+	97	=	177
  73	+	74	=	147	——	53	-	21	=	32	——	41	+	38	=	79
  48	+	76	=	124	——	11	-	10	=	1	——	18	-	12	=	6
  48	-	39	=	9	——	99	+	16	=	115	——	21	+	57	=	78
  27	-	23	=	4	——	59	+	96	=	155	——	53	-	27	=	26
  82	+	54	=	136	——	26	-	12	=	14	——	51	+	79	=	130
  90	+	30	=	120	——	87	+	28	=	115	——	70	-	60	=	10
  93	+	82	=	175	——	99	+	60	=	159	——	47	-	35	=	12
  89	-	17	=	72	——	82	-	39	=	43	——	68	+	66	=	134
  86	+	83	=	169	——	62	+	72	=	134	——	23	+	93	=	116
  60	-	31	=	29	——	94	+	84	=	178	——	89	+	64	=	153
  21	-	14	=	7	——	69	-	21	=	48	——	83	-	16	=	67
  70	+	74	=	144	——	96	-	20	=	76	——	49	+	74	=	123
  87	+	36	=	123	——	19	+	14	=	33	——	84	+	46	=	130
  91	-	89	=	2	——	17	-	12	=	5	——	58	+	83	=	141
  28	+	19	=	47	——	88	+	65	=	153	——	18	+	75	=	93
  12	-	12	=	0	——	61	+	54	=	115	——	91	+	77	=	168
  82	-	53	=	29	——	92	-	62	=	30	——	14	-	12	=	2
  35	+	38	=	73	——	72	-	54	=	18	——	43	-	10	=	33
  47	-	15	=	32	——	48	-	15	=	33	——	32	+	74	=	106
  67	-	63	=	4	——	13	-	10	=	3	——	74	+	94	=	168
  61	+	73	=	134	——	47	+	100	=	147	——	93	-	25	=	68
  78	+	75	=	153	——	98	+	21	=	119	——	96	+	96	=	192
  79	+	36	=	115	——	63	+	93	=	156	——	81	+	74	=	155
  97	-	82	=	15	——	20	+	14	=	34	——	68	-	34	=	34
  59	+	53	=	112	——	11	-	11	=	0	——	47	+	12	=	59
  75	+	81	=	156	——	98	+	63	=	161	——	61	+	91	=	152
  72	+	31	=	103	——	60	-	31	=	29	——	55	-	31	=	24
  37	-	26	=	11	——	62	+	30	=	92	——	30	+	42	=	72
  47	-	33	=	14	——	63	-	30	=	33	——	28	-	13	=	15
  17	-	16	=	1	——	17	-	13	=	4	——	13	+	95	=	108
  24	-	10	=	14	——	25	+	86	=	111	——	48	-	48	=	0
  16	+	62	=	78	——	18	-	17	=	1	——	96	-	68	=	28
  62	-	42	=	20	——	30	+	68	=	98	——	55	+	78	=	133
  69	+	44	=	113	——	94	+	85	=	179	——	69	-	18	=	51
  13	+	85	=	98	——	66	-	55	=	11	——	42	+	99	=	141
  69	-	33	=	36	——	54	-	53	=	1	——	29	+	76	=	105
  76	+	80	=	156	——	65	-	28	=	37	——	75	-	69	=	6
  73	-	23	=	50	——	44	-	38	=	6	——	24	+	55	=	79
  78	+	28	=	106	——	66	+	23	=	89	——	62	-	49	=	13
  83	-	40	=	43	——	58	-	46	=	12	——	41	-	24	=	17
  54	-	12	=	42	——	33	+	60	=	93	——	27	-	10	=	17
  76	-	21	=	55	——	92	+	69	=	161	——	22	+	80	=	102
  23	-	20	=	3	——	22	-	13	=	9	——	25	-	14	=	11
  98	-	54	=	44	——	95	-	14	=	81	——	99	+	25	=	124
  61	+	84	=	145	——	99	+	86	=	185	——	41	+	19	=	60
  40	-	32	=	8	——	52	+	99	=	151	——	90	-	75	=	15
  21	+	33	=	54	——	76	-	74	=	2	——	90	-	76	=	14
  93	-	14	=	79	——	36	-	29	=	7	——	66	-	31	=	35
  69	-	45	=	24	——	26	+	14	=	40	——	13	+	97	=	110
  24	+	40	=	64	——	26	-	20	=	6	——	81	-	16	=	65
  88	+	30	=	118	——	72	+	19	=	91	——	58	-	52	=	6
  85	-	17	=	68	——	35	-	26	=	9	——	25	-	23	=	2
  95	+	86	=	181	——	26	+	48	=	74	——	59	-	46	=	13
  25	-	18	=	7	——	29	-	23	=	6	——	48	-	21	=	27
  14	-	11	=	3	——	42	-	16	=	26	——	76	+	33	=	109
  37	+	62	=	99	——	38	+	35	=	73	——	54	+	97	=	151
  46	-	11	=	35	——	49	-	36	=	13	——	86	-	82	=	4
  59	+	65	=	124	——	85	-	43	=	42	——	64	+	58	=	122
  70	+	12	=	82	——	61	+	10	=	71	——	85	+	51	=	136
  55	-	49	=	6	——	83	+	87	=	170	——	37	-	21	=	16
  55	-	47	=	8	——	18	-	14	=	4	——	45	+	98	=	143
  91	+	87	=	178	——	26	-	17	=	9	——	91	-	55	=	36
  54	+	90	=	144	——	19	-	18	=	1	——	48	+	49	=	97
  64	-	43	=	21	——	16	-	14	=	2	——	61	+	23	=	84
  53	+	52	=	105	——	31	+	38	=	69	——	76	-	22	=	54
  51	+	43	=	94	——	25	+	15	=	40	——	67	+	25	=	92
  67	+	16	=	83	——	17	-	11	=	6	——	70	-	49	=	21
  33	-	12	=	21	——	88	+	15	=	103	——	44	+	52	=	96
  81	+	95	=	176	——	94	-	69	=	25	——	19	+	63	=	82
  52	-	28	=	24	——	21	-	16	=	5	——	70	+	59	=	129
  80	+	27	=	107	——	82	+	80	=	162	——	87	-	34	=	53
  54	+	33	=	87	——	14	-	13	=	1	——	40	-	16	=	24
  24	-	18	=	6	——	55	+	51	=	106	——	84	-	65	=	19
  62	-	56	=	6	——	84	+	25	=	109	——	18	+	86	=	104
  46	+	66	=	112	——	39	+	99	=	138	——	84	-	72	=	12
  16	-	14	=	2	——	49	+	11	=	60	——	73	-	29	=	44
  99	-	81	=	18	——	42	-	36	=	6	——	21	-	17	=	4
  32	+	22	=	54	——	65	-	40	=	25	——	39	-	30	=	9
  46	+	53	=	99	——	26	+	85	=	111	——	87	-	63	=	24
  87	+	26	=	113	——	14	+	93	=	107	——	64	-	11	=	53
  75	+	95	=	170	——	30	-	30	=	0	——	76	-	48	=	28
  68	+	29	=	97	——	57	+	89	=	146	——	72	-	11	=	61
  47	+	38	=	85	——	99	+	62	=	161	——	56	+	28	=	84
  68	-	39	=	29	——	63	-	47	=	16	——	65	+	76	=	141
  59	-	14	=	45	——	79	+	42	=	121	——	28	+	93	=	121
  35	+	44	=	79	——	65	-	48	=	17	——	89	+	38	=	127
  64	+	91	=	155	——	99	-	26	=	73	——	24	+	27	=	51
  11	-	10	=	1	——	78	+	32	=	110	——	90	+	23	=	113
  88	+	98	=	186	——	82	-	58	=	24	——	45	+	69	=	114
  59	-	24	=	35	——	92	+	44	=	136	——	65	-	18	=	47
  94	-	58	=	36	——	50	+	75	=	125	——	14	-	12	=	2
  23	+	57	=	80	——	84	-	82	=	2	——	57	-	19	=	38
  56	+	33	=	89	——	40	-	25	=	15	——	61	-	45	=	16
  49	-	11	=	38	——	31	+	38	=	69	——	23	-	14	=	9
  24	-	20	=	4	——	72	-	19	=	53	——	95	-	42	=	53
  49	-	26	=	23	——	20	-	11	=	9	——	38	+	80	=	118
  39	+	55	=	94	——	56	-	37	=	19	——	27	-	20	=	7

  
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