1. Rewrite the addition formula into the multiplication formula:

9+9+9+9=( )×( )=( )

10+ 10+ 10+ 10+ 10=( )×( )=( )

2. Rewrite the multiplication formula into the addition formula:

2×3=( )+( )+( )=( )+( )

5×3=( )+( )+( )+( )+( )=( )+( )+( )

3.4× 8 Pronunciation: ()

8×4 Pronunciation: ()

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4×8=32 Pronunciation: ()

6×3= 18 6 and 3 are called (), and 18 is called ().

4. Read and write the formula or read and write the formula:

4624 () × () = () or ()× () = ()

4×6=24 6×4=24