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Basic Facts REVIEW Mrs. Duffy Grade 2-4 CES
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8+8
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6+4
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5+7
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2-1
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12-7
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7+3
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9-3
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6-3
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3+6
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1+3
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8-5
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6+3
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1+9
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3+5
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1+1
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1+4
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3+7
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2-1
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5+3
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12-6
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Think: take away 2, then 1 more
8-3 Think: take away 2, then 1 more 8-2 = 6 -1 5
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14-7 S M T W F 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
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10-3
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Think: 3+3 = 6 and “two more”
3+5 Think: 3+3 = 6 and “two more”
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4+6
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5+3
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4-1
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7+5
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10-4
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10-6
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12-5
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5+8
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6+8
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7+1
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6+9
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5+9
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9+3
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8+6
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8+4
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4+9
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8+3
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9+5
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7+7 S M T W F 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
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3+9
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9+4
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9+7
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8+5
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4+8
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Think: 12-2 = 10, and subtract 1 more.
12-3 Think: 12-2 = 10, and subtract 1 more.
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13-4
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6+1
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14-5
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15-6
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16-7
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11-3 Think: = 7 and add 1 => 8
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12-4
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13-5
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8-4
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14-6
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9-0
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10-3
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2-0
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5+5
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11-4
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12 – 5 Think: 10-5= 5 and add 2 7
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1-1
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2+0
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6-0
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5+0
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0+4
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0+0
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0+9
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0+8
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8-0
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1+0
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4+0
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1-0
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3+1
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9+0
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4-0
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0+3
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0+2
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10-5
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0+6
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1+6
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5-0
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2+4
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7+0
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7-0
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0+5
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2+9
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0-0
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3-0
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8+0
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0+1
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3+0
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0+7
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6+0
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2+6
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5+2
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2+2
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9+2
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6+2
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2+5
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2+8
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2+1
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3+4
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8+2
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2+7
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8+1
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7+2
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4-2
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5-2
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3-2
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6-2
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2-2
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1+5
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9-2
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7-2
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8-2
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7-1
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2+3
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4+2
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5+6
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8+9
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18-9
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7+6
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6+7
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8+7
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5+1
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5+4
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4+5
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7+8
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1+2
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3+2
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6+5
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5-2
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1+7
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5-3
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7-4
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7-3
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9+1
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9-5
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3+3
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4+1
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9-4
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4-2
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11-6
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1+8
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11-5
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13-7
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16-8
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4+3
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13-6
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15-8
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15-7
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17-8
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3-1
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9+8
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5-1
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8-1
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9+9
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6-1
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3+8
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6+6
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17-9
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9+6
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9-1
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8-3
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4+4
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