Solve using the gird method.

$6\times 43$

Multiply:

$25\times 3$

Multiply: $32\times 5$

Find the product of $18\times 15$ by splitting.

Multiply: $21\times 4$

Multiply: $24\times 5$

Multiply:$30\times 5$

Multiply: $26\times 4$

Multiply: $43\times 2$

First guess the answer and then calculate:

$77\times 55=$ 

Multiply: $48\times 4$

Multiply:

$58\times 2$

Multiply:

$24\times 2$

Multiply:

$22\times 3$

Find the product of $22\times 15$ by splitting.

Multiply: $23\times 9$

Solve:

$37\times 18$

Multiply: $38\times 2$