手脑速算20以内加减法

班别：________ 姓名：________ 学号：________ 成绩：________ ( ) + 4 = 5( ) + 5 = 18( ) + 18 = 20( ) + 5 = 6 ( ) - 4 = 3( ) - 7 = 1( ) - 8 = 5( ) - 5 = 2

1 + ( ) = 7 6 + ( ) = 615 + ( ) = 15 4 + ( ) = 15 7 - ( ) = 219 - ( ) = 19

2 - ( ) = 19 - ( ) = 8 ( ) +

3 = 5( ) + 5 = 20( ) + 1 = 20( ) + 10 = 15 ( ) - 10 = 8( ) - 2 = 6( ) - 3 = 5( ) - 12 = 2 1 + ( ) = 1210 + ( ) = 150 + ( ) = 20 + ( ) = 17 20 - ( ) = 1816 - ( ) = 1520 - ( ) = 312 - ( ) = 12 ( ) + 7 = 9( ) +

4 = 5( ) + 3 = 10( ) + 16 = 17 ( ) -

5 = 3( ) - 15 = 2( ) - 18 = 2( ) - 3 = 13

6 + ( ) = 1

7 1 + ( ) = 140 + ( ) = 414 + ( ) = 20

7 - ( ) = 6 1 - ( ) = 112 - ( ) = 67 - ( ) = 7 ( ) + 2 = 10( ) + 4 = 5( ) + 5 = 11( ) + 4 = 20 ( ) - 12 = 5( ) - 6 = 2( ) - 13 = 3( ) - 15 = 3 7 + ( ) = 14 3 + ( ) = 10 4 + ( ) = 130 + ( ) = 20 5 - ( ) = 412 - ( ) = 2 3 - ( ) = 017 - ( ) = 7 ( ) + 6 = 8( ) + 1 = 17( ) + 9 = 17( ) + 6 = 10 ( ) - 19 = 1( ) - 14 = 3( ) - 2 = 16( ) - 15 = 1 1 + ( ) = 1 2 + ( ) = 2 2 + ( ) = 37 + ( ) = 8 18 - ( ) = 58 - ( ) = 5 2 - ( ) = 113 - ( ) = 6 ( ) + 1 = 20( ) + 1 = 6( ) + 11 = 11( ) + 6 = 11 ( ) - 3 = 14( ) - 12 = 4( ) - 13 = 2( ) - 2 = 17 1 + ( ) = 1410 + ( ) = 128 + ( ) = 14 1 + ( ) = 14 12 - ( ) = 3 2 - ( ) = 0 4 - ( ) = 113 - ( ) = 3 3 + ( ) = 20 1 + ( ) = 2014 + ( ) = 16 4 + ( ) = 5

班别：________ 姓名：________ 学号：________ 成绩：________ ( ) + 16 = 17( ) + 5 = 18( ) + 14 = 16( ) + 2 = 9 ( ) - 11 = 9( ) - 7 = 1( ) - 9 = 7( ) - 4 = 14 0 + ( ) = 14 6 + ( ) = 614 + ( ) = 14 1 + ( ) = 18 3 - ( ) = 219 - ( ) = 1918 - ( ) = 169 - ( ) = 8 ( ) + 3 = 15( ) + 5 = 20( ) + 9 = 12( ) + 12 = 18 ( ) - 4 = 9( ) - 2 = 6( ) - 11 = 8( ) - 16 = 4 7 + ( ) = 1910 + ( ) = 150 + ( ) = 18 + ( ) = 17 19 - ( ) = 216 - ( ) = 15 6 - ( ) = 1 3 - ( ) = 0 ( ) + 1 = 8( ) + 4 = 5( ) + 5 = 10( ) + 9 = 13 ( ) - 4 = 15( ) - 15 = 2( ) - 11 = 1( ) - 12 = 2 12 + ( ) = 17 1 + ( ) = 14 4 + ( ) = 7 1 + ( ) = 1 19 - ( ) = 19 1 - ( ) = 1 4 - ( ) = 3 6 - ( ) = 6 ( ) + 4 = 7( ) + 4 = 5( ) + 11 = 11( ) + 3 = 9 ( ) - 8 = 11( ) - 6 = 2( ) - 17 = 2( ) - 11 = 9 0 + ( ) = 12 3 + ( ) = 100 + ( ) = 1 3 + ( ) = 8 14 - ( ) = 1412 - ( ) = 212 - ( ) = 119 - ( ) = 3 ( ) + 4 = 7( ) + 1 = 17( ) + 16 = 20( ) + 3 = 8 ( ) - 14 = 2( ) - 14 = 3( ) - 15 = 1( ) - 1 = 13 1 + ( ) = 3 2 + ( ) = 2 2 + ( ) = 5 1 + ( ) = 5 16 - ( ) = 18 - ( ) = 5 4 - ( ) = 18 - ( ) = 0 ( ) + 6 = 20( ) + 1 = 6( ) + 5 = 16( ) + 1 = 13 ( ) - 14 = 4( ) - 12 = 4( ) - 7 = 1( ) - 19 = 1 8 + ( ) = 910 + ( ) = 12 5 + ( ) = 13 6 + ( ) = 8 19 - ( ) = 4 2 - ( ) = 018 - ( ) = 17 1 - ( ) = 0

3 + ( ) = 1

4 1 + ( ) = 20 1 + ( ) = 1 2 + ( ) = 2