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Ten minus four is six.
Maths
Let’s watch
Listen and answer
Listen and answer
, , , ,
+ 10
+ 10
+ 10
+ 10
Rules: plus 10
Listen and answer
, , , ,
— 10
— 10
— 10
— 10
Rules: minus 10
Let’s read
, , , ,
Rule: plus 20
, , , , ,
Rule: plus
, , , , ,
Rule 1: plus
Rule 2: plus
Can you find out the missing numbers?
Try to make the sum of each row is 75. (使每行、每列上的三个数加和为75。)
20
45