add_filter( 'woocommerce_product_tabs', 'reorder_woocommerce_product_tabs', 98 );
function reorder_woocommerce_product_tabs( $tabs ) {
   $tabs['reviews']['priority']                = 5;  // Reviews first
   $tabs['description']['priority']            = 10; // Description second
   $tabs['additional_information']['priority'] = 15; // Additional information third
   return $tabs;
}

// Show trailing zeros on prices, default is to hide it.
add_filter( 'woocommerce_price_trim_zeros', 'wc_hide_trailing_zeros', 10, 1 );
function wc_hide_trailing_zeros( $trim ) {
    // set to false to show trailing zeros
    return false;
}