Exodus 36:21

19 And he made a covering for the tent of rams’ skins dyed red, and a covering of badgers’ skins above that.

20 And he made boards for the tabernacle of shittim wood, standing up.

The length of a board was ten cubits, and the breadth of a board one cubit and a half.

22 One board had two tenons, equally distant one from another: thus did he make for all the boards of the tabernacle.

23 And he made boards for the tabernacle; twenty boards for the south side southward:

This was said to Israel at a particular time, so it is wise to read it together with the surrounding text. Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB
Each frame was ten cubits long and a cubit and a half wide.
KJV
The length of a board was ten cubits, and the breadth of a board one cubit and a half.
WEB
Ten cubits was the length of a board, and a cubit and a half the width of each board.
ASV
Ten cubits was the length of a board, and a cubit and a half the breadth of each board.
DARBY
ten cubits the length of the boards, and one cubit and a half the breadth of one board;
BLB
Ten cubits [is] the length of the board, and a cubit and a half cubit [is] the width of the one board,
ÅB
Hver planke var ti alen lang og halvannen alen bred.
OTB
Hver ramme målte ti alen i lengde og en og en halv alen i bredde,
B1930
Hver planke var ti alen lang og halvannen alen bred.

Study notes (Tyndale)

Original text and word study